Hecubus

I've been running NOS for a long time now and I know all the basics and more but I've been having this problem for sometime that I have not been able to figure out yet.. thought someone here would have some expierence on same problem they had

anyways the prob is on a 91 tpi 150 shot "wet plate system" I've ran several bottles threw it and no prob now all of a sudden at WOT it boggs down like crap
I've checked the following/// Plenty of fuel/ plenty of nos/ timing 2* retarded like I alwasy run/ swich is adjusted right for WOT/ bottle mounted right/ good injectors/ plenty of fuel press./ silionids working/ good spark/ and I think that's it but I've checked for all of the obvious and I dont see anything wrong ....also runs fine off bottle

Just havent found anything wrong..ideas, coments, anything that might help would be great!

thanks

DARCOM

check your o2 sensor if it has gone bad
it may tell the computer to run a bit richer
cousing your bog.
i run a wet system on mine and had that prob.

IROCKZ4me

One guy on here once posted a problem with a bog like that while on the juice. He later posted that he found the problem. He had accidently insalled the fuel jet on the n2o side and the n2o jet on the fuel side. Because of that it was way rich while on nitrous.

------------------

Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

Hecubus

I just put in a new o2 sensor like 2 months ago but i will check that as well

as far as the jets they are right..

anybody else???

Bob Wooten

have you pulled the plugs? my bet is that the motor is fat & falling on its face. are you monitoring it with a scan tool? if so what is the O2 doing & what is the timing doing? any knock? if not then i would say fat & not lean (good thing).

When you are @ WO the O2 sensor is not doing anything (it is still there & recording but cpu not compensating) it is running completly on a MAP'd response (no feedback, totaly on tables) w/the exception of the timing that is still live. you have a fuel pressure gauge in the car? if so is it jumping up? or staying nice & stabile?

BW



------------------
Bob Wooten
r71chevy@earthlink.net
www.r71camaro.homestead.com

Hecubus

No I don't have a reading tool( I wish I did)
I have the fuel pressure guage in the car running at 45psi no vacume.. not jumping at all... responding to throttle fine... the plugs dont look like it's running too fat...

I'm just at a loss right now... any sugestions????

Bob Wooten

couple of things. first make a run on the motor. go right to the pits. do a plug cut & notice what they look like. turn the squeeze on but leave the bottle off & then make a run. again go right to the pits & do a plug cut. if you find that the bog is the "same" as it is w/the nos on you have found the problem. if the bog is similar then again i say you have found your problem. do another plug cut & compair it to when you had the nos off, i think that you are going to find that the plugs are wetter.

check the wireing to the solenoids. if they are good then i would say that your NOS solenoid is failing. this solenoid has bunch of pressure on the back side of it & they do fail.

BW

------------------
Bob Wooten
r71chevy@earthlink.net
www.r71camaro.homestead.com

The ODB

weak ignition,
or tired N2O solenoid

Hecubus

ODB
I thought it may have been weak ign. as well but, I have recently read some poasts about the spark controllers on speed dinsity being in the ecm,s ?? can you tell me more or if I'm right??.... I think that I'm going to buy a 6al MSD next week would this be a good move??

Bob
I just replaced all plugs/wires and 02 sensor tonight and nothing still the same?? silinoids are all good tested them sepratly and together they are working but I dont know if at full flow.. it would visually seem like it though..

Hope someone can please shead some light on my crapy position Thanks


[This message has been edited by Hecubus (edited March 16, 2001).]

Bob Wooten

Turn off the bottle & make a run.

------------------
Bob Wooten
r71chevy@earthlink.net
www.r71camaro.homestead.com

IROCKZ4me

The ESC module (knock filter) is in the PROM in the SD ECMs. It is on the firewall beside the master cylinder on MAF cars.
The EST module (ignition module) is at the distributor on both systems.

Chances are, if it was an ignition problem it would probably be present both with and without nitrous use. There is a slight chance that an ignition problem could occur and show itself only when cylinder pressure is higher do to nitrous use, but it isn't likely.
I would be looking for an over rich or lean condition.

If your system has some age on it and the solenoids haven't been rebuilt then it is probably time.
You didn't say how you checked them but it sounds like you just listened to see if they are both clicking when activated. If they are it shows that the electric side is good but the mechanical seals are probably worn.
There is an orifice with a lip in the solenoid. A plunger with a seal is what moves to open or close the system. The seal may be worn allowing it to seat down over the lip and not have full flow. Something foreign may be in there causing a flow restriction too. You can get solenoid rebuild kits pretty cheap.

------------------

Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

[This message has been edited by IROCKZ4me (edited March 16, 2001).]

Hecubus

ok Bob

I ran it turning the bottle off and it boggs down still but it sounds a little diferent and takes longer to come back


Irock
the system is less than a year old with maby 6-7 bottles ran threw it... when I check if the silinoids were working I turned key and tested with throttle body open and watched each spray sepratly and then together both working fine..

you guys think it might be the ign. mod.??
also I'm going to get a 6al next week this should take care of any weak ign. probs. correct??
what do you guys think?

------------------
Hecubus
http://www.tweak3d.net/temp/z28.jpg

87Z-ya

iTrader: (1)

The little blue fitting going into the n2o solenoid has a screen in it. I would bet there is some trash in it!!!!!!!!!

------------------
87z 383,afr 190's, comp hyd roller(242/248-.540/.562,114 sep),Ported and polished mini ram, 30lb inj, 3.42 gears, tremec 5spd, , 1,3/4" slp headers, speed pro bank to bank-wb02.
"Just remember children, no man can beat you once youv'e found the cliterous." 'chef'

The ODB

NOS systems are already very rich and will majorly tax a stock ignition system.
Run some cold non-resistor sparkplugs with tight gaps no more than .033" and put on the MSD6AL.

does it ever pop or backfire into the exhaust or blow black smoke out the exhaust? have someone watch from behind when you hit it.

Hecubus

ODB

right when I let off and it starts to come back I watch for some somoke and I see some "but not a whole lot at all" black smoke however from inside I can hear it a couple of time pop in the headers
Do you think that trying to retard the timing some more might help???

87Z

That's one thing that sliped my mind I will check that and get back asap...

Thanks a bunch for helping me so far guys!!
I'll get back on the fitting
in the meanwhile what else can you guy think of??



------------------
Hecubus
http://www.tweak3d.net/temp/z28.jpg

Bob Wooten

It could be the ignition but i kind of doubt it. if you have the ignition system on order, then hang in there until it comes. The guy that does my smogs has a scope that shows the output voltage for each hole as it is running. I had him run my motor stock & with the highfier & i got to record the improvement (about 5% btw). maybe your local mechanic has the same (or similar machine). this will tell you if the ignition has died or not. (also give you a baseline to see if the product you bought was a good investment or not).

if that does not wake it back up, replace the NOS soleniod (replace the filter in the fitting, i forgot about that). my guess that the solenoid is not "broken" but actually not working right.

BW

------------------
Bob Wooten
r71chevy@earthlink.net
www.r71camaro.homestead.com

The ODB

I think it is ignition. No, retarding will not help.
MSD amplifiers are NOT for increasing voltage. Voltage is not what begins combustion in the chamber.


I don't think you could see what's coming out your pipes from inside the car.
what is your O2 voltage reading at full throttle before you hit the nitrous?

The ODB

what are your plugs gapped at by the way?

Hecubus

The plugs are gaped at .035 they are ac delco

how would I tell the o2 voltage if I do not have a Scan Tool or can you?

I just rembered when I fist got this kit in paticular this prob happend right at install like very very brefily then stoped and I thought nothing of it cause the local guy said that he might have filled the bottle too much before he gave it back to me.

[This message has been edited by Hecubus (edited March 16, 2001).]

The ODB

you could use Diacom, or just a digital volt-ohm meter.

try some Nippon Denso T20PR-U plugs gapped at .032"

overfilling a bottle will not cause a problem.

Hecubus

ODB


OK ..well I just checked the fitting this morning and it was fine nothing at all in it... Here's whats new I was just messin around testing stuff and I turned the fuel pressure down 8-10 or so psi and it feels like it wants to go almost but still bogging but not nearly as bad though.... I do have a 155lph pump ... and I Can see some black smoke behind me when I go WOT & NOS

would any type of octane booster help I'm kinda thinking it's either rich for some reason or detonating?? When the computer is in a loop at WOT dose the knock sensor still have any effect??

Thanks again for helping so much so long

The ODB

octane booster would probably make it worse.

how is your bottle positioned in your car?
angle? etc.

Cobra R

What is your bottle pressure? If you are under 900psi, it will fall on its face, because it puts in enough fuel for 900-1100psi of pressure. If you under, 900 it will perform horrible. If you have a bottle heater that you have been using, make sure that its working properly. I had some trouble with my thermostat in my NOS bottle heater before.

Hecubus

ODB


It's at the right angle foe the bottle type..
At an angle with the valve handle pointing up

Cobra

I dont have a bottle heater or a NOS pressure guage ((I think it might be wise to invest in a guage)) It's pretty warm/hot here all the time I dont think that a Bottle warmer would be needed .. what do you think??

precision350

You might want to check to see if the n2o supply line or the n2o line to the intake are clogged. Also take the bottle out and open the valve to see if a white mist comes out or not.

------------------
92 Camaro Z28
350 TPI
Dart Iron Eagle heads
10.5:1 cr
Lunati L54779 cam
52mm throttle body
Ported plenum
Home made AFPR ($2)
1 5/8 shorty headers
Ram air
255 lph Holley fuel pump
2.5 inch TRUE DUAL exhaust (no cats)
Flowmaster mufflers
4.10 gears
700R4 w/2000 stall
100HP nitrous
Best time before any of these mods:
15.1 @ 91.9
Best time after mods:
12.60 @ 108.3
That is at high alt.
5600 feet Morrison, Colorado Bandimere Speedway

Cobra R

Yes, get a pressure gauge. The bottle should be around 80 deg. or so. 80-85 is ideal. That gets you into the 1000-1100 psi range. Not sure what temps you have around there. 60-65 deg bottle is not going to have good pressure. When you ran your first bottles, was it warmer out?

Hecubus

Cobra

Actually it was at night and Cold I rember the bottle getting very cold and sweaty but no prob at all

Precision350

I've check all of that and nothing is wrong there

------------------
Hecubus
http://www.tweak3d.net/temp/z28.jpg
91-Z28 305 Tpi "G92" mods-- K$N/Foil/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel & Oil Press Guage's

The ODB

next time you go to refill your bottle have them remove the valve to make sure the feed tube (siphon tube) is in place and in good shape.
that is just to be sure something dumb didn't happen like the siphon tube falling off into the bottle.

I still think you have an ignition problem. You never said you checked your plugs with an ohmmeter.

Hecubus

ODB

I dont have a Meter But I'n going to try to get one tomarrow

As Far as the Ign. goes I still really dont know how an MSD really works off of the Factory Ign.. Can you tell me a real breef Discreption on what it dose

And if I need to replace anything (((Like the Factor Ign. Modual))) that might be bad now in oreder for the 6al to work it's best?

thanks again!

------------------
Hecubus
http://www.tweak3d.net/temp/z28.jpg
91-Z28 305 Tpi "G92" mods-- K$N/Foil/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel & Oil Press Guage's

Bob Wooten

did you ever get this resolved? i was just wondering if you ever fingured out what was wrong?

BW

------------------
Bob Wooten
71 Camaro, 91 EFI, 01 HP
r71chevy@earthlink.net
www.r71camaro.homestead.com

Hecubus

Hey Bob

I actually haven't yet but,.... I just installed the MSD 6al and MSD coil....when I installed all of that I was having Proplems with Ign. untill it just Died all together ..... After checking everything I came to find that the Pick up coil didnt test too good....so I pulled the distributor and found this>>>>> http://www.geocities.com/hecubus91/gearpage.htm

not too good I had a heck of a time trying to find a new gear but I eventually had to go to the dealer and had to pay $36 for the dang thing!(((should be here tomarrow)).... but I guess thats better than $95 for the whole distributor

but I still plan on reporting back to you guys with what I come up with on the NOS
THANKS
chatch you guys in a couple of days

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

Bob Wooten

I guess dats why they make them outta softer metal than the gear on the cam (some are brass), you could very well be in for a cam change right about now, & THAT my friend would suck. make sure you look down dat hole & see what the cam gear looks like. dont want a repeat tomorrow. if it happens again, i am thinin' it is time to check runout on the cam.

one thing about the pickup coil. were any of the points bent over? if so i bet that the bushings in the distributor are gonnzo & that is the start of the problem. bushings go out, points stick into PU coil & "hold" distributor, gear strips on cam. maybe not all @ once but i bet it would not take many times.

BW


------------------
Bob Wooten
71 Camaro, 91 EFI, 01 HP
r71chevy@earthlink.net
www.r71camaro.homestead.com

Hecubus

Bob

I actually forgot to tell you in the last post that I checked the cam and it's still im dang good shape....

I think that my High Voulume oil pump is what did it...

I just got everything going tonight and it sounds pretty good so far nothing wrong

I'm actually thinking of changing the cam because I want to get H&S full roller 1.6 Rockers and a new timing chain so I thought I might as well...

but I want to see what the deal is on the NOS first I'll try to do some new tests tomarrow if I have the time and I'll let you know what happens
Thanks

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

precision350

It just sounds like the n2o just isn't making it into the intake. I don't know if you have tried this but i'll say it anyway. Turn the bottle on, manually open the throttle body to WOT (engine off) hold it open for about five seconds. Watch to see how much n2o goes into the intake. If the spray is strong at first then dies down, then there is a restriction that may have been overlooked. If the spray is constant and shows no sign of decreasing, then my mind is out of suggestions. Sorry if this doesn't help.

Hecubus

Ok guy still bad news I'm afraid

I jutt got threw putting on new wires/plugs/cap/rotor/pickupcoil/dist. gear/and MSD 6al and MSD blaster coil
and I went down and tested the Ing. modual

everything is good but still no NOS

I wanted to wait untill it was a little warmer for the bottle temp to get up so today was the day I tried it... It's still falling on it's face and now that it's really clear I CAN see Black smoke comming out...
what the heck now???
good spray, good fuel,really good spark now

I dunno guys what do you think I should do next???
Any Ideas would help
Thank you

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

The ODB

dayum.
what size fuel jet are you running and what is your fuel pressure at the jet during a nitrous pass?

Hecubus

ODB

ok well after testing and running all freaking day long!! I came to find that my fuel was way!! to much..... HOWEVER I used the recomened jets for the plate sysetm for 100 shot on 305 42 fuel and 55 No2.....

After tweaking with it all day I turned down the fuel all the way to 35psi and put a 38fuel jet and !!70!! No2 jet It "worked" somewhat....

It ran just fine.. some good power but it's like it fades in and out of Power like the No2 supply is not suffecient or constant

I flushed all the lines WELL check everything!! the silonoid is working fine I check it with the bottle open and off the plate... Flows big time...as well as taking the plate off and checking it there all good flow....oh and I tried a buddys bottle to see if it was the bottle and it did the same

but it just doesn't seem as though the No2 supply is all there??

I really dont know man??? I've exuasted every Idea that I can come up with ...

The last possible things that come to my mind Is that the bottle pressuer is just not sufecient and I might need to get a bottle warmer

uhh the last thing but I dont think is that important is the plug gap is still at .035 and I have stock wires but NEW

What the heck guys NOS is not that freaking complex!!

I just dont get it
What are your thought's ??????
THANKS!!

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

Bob Wooten

If i am not right here correct me. it worked fine, now it does not. you did not have a bottle warmer before & now you need one? i think not. when i was running the squeeze, i did not run a warmner & i only ran @ nite.

My2c, bit the bullet & change the N2O solenoid. if what i said in the first 3 senenses is right, then something is broken, this is not an issue of configuration or it would not have worked in the first place. maybe you can get the same buddy that lent you the bottle to lend you the solenoid.

The only other thing that might make sense is that there is something pinching the N2O line. when the car is moving and flexing somethign might be pinching a line or wire.

BW

------------------
Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

The ODB

that fuel jet sounds like a good match for a carbureted plate system that runs at 6psi fuel pressure. You said you have TPI right? could you be running the wrong fuel jet for a TPI system's pressure?

Hecubus

Bob

No, I works now.. but Not like it should though....
The power will fade in and out kinda surging or something ....No pinched lines I did check for that


ODB
Ya it's a TPI
the fuel jetting calls for a 42 and it was either way too much fuel or not enough No2
I dunno
also thinking of going with a colder plug I was using A/C delco 45 .035 gap
I want to go to A/C delco 44 at .045 gap
you think that would be good?

I just can't bring my self to belive that that silonid is bad already after so little use.....but it may Very well be what do you think??

Thanks

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/ 100-150 Nos Wet Plate System/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

The ODB

colder plugs are great,
but it sounds like it is still too rich.
get the bottle pressure up to around 1200psi and see if it gets better and stops surging.

Hecubus

I just got my Air/Fuel Guage installed lastnight and got colder plugs gaped at .045
I have a class tonight so I'll give her some goes and see what mixture I get while cracking the bottle

I still need some Good Wires ...after all theses goodies that I've been having to get I'm runnin low on cash

I need to get a set that's is not too $$
What do you guys recomend that I get?
I was told that Jacobs/talors/MSD are the best
what you guys think?


------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/Nos Wet Plate System currently ~200hp shot/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel,Air-fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

Bob Wooten

I am not sure what kind of gauge you have but I bought one of those $200 specials, w/O2 sensor, gauge etc. I had it in & when i took it up to the Dyno shop for dyno tune i compared it to his Motec. it was only about 5 AFR's off. no kidding. @ 14.7 on the motec it was reading 9.something. to top it all off, if it was only an offset thing it would not have been that bad but it was off over the entire range from lean to rich & not by the same amount. I am putting about 0 faith in any of the cheapy ones.

BW

------------------
Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

vortecfcar

In the past have you left the bottle open for extended periods of time? leaving the bottle open for a long time and letting the solenoid hold all the pressure is a good way to eat up solenoids. Thats the only thing I can think might have messed up your solenoid with so few miles on it.

87Z-ya

iTrader: (1)

Hecubus. the n20 jet you are running Is closer to the 150 hp range. I run a 53fuel 70n20 in my car and it surges also. It always has since the kit was new. It seems to be n2o flow through the small powershot solenoid is insufficient. Im going to upgrade to the cheater solenoids myself.

------------------
87z 383,afr 190's, comp hyd roller(242/248-.540/.562,114 sep),Ported and polished mini ram, 30lb inj, 3.42 gears, tremec 5spd, , 1,3/4" slp headers, speed pro bank to bank-wb02.
"Just remember children, no man can beat you once youv'e found the cliterous." 'chef'

Hecubus

87z

I'm running the 70 no2 and 53 fuel was way! too much fuel I had to step it down all the way to a 38 before I could even see any results
I would imagine that it's either the 255lph pump being too much//or I think it's more likely that I'm not getting enough no2 as I should

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/Nos Wet Plate System currently ~200hp shot/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel,Air-fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

Alpine406

a powershot solenoid has a .75 orifice,capable of 175 hp, so if you wanted to run a .75 jet, you could put a 100 jet in there and it will only flow the .75
no need to step upto a cheater unless you are going to a bigger shot.

Hecubus

Ok guys latest update

I've been Slowly steping down the Fuel Pills and been getting better results
but, I'm kinda weary of going too low (at 37 now)
I still dont have my wires so I didnt put the colder plugs in yet and open the gap to 45 they should be here tomarrow

anyway .... The power in first is Awsome all the way threw but second the higer speed I get the power drops off and seems to want to bogg "Just a little" and third is the same way
think I should continue to step down ??

I think that it's still a little too rich but, it's kinda weird that It burns great all the way threw first with tons of power
what do you make of it?

------------------
Hecubus
Check out my new site http://www.geocities.com/hecubus91
91-Z28 305 Tpi "G92" mods-- K$N/Foil/Cat Back 3" Flowmaster/3" High Flow Cat/B&M shifter/ Intrax Springs/ Kyb Shock's-Struts's/Poly Bushings/Hotchkis Strut Tower Brace/Nos Wet Plate System currently ~200hp shot/ 155lph Fuel Pump/ Holly Adj. Fuel Press. Regulator/Digital Fuel,Air-fuel, voltage & Oil Press Guage's/MSD 6al/ Blaster coil/ Optima,Yellow top batt.

"I spent all my money on race cars, beer, and Broads... The Rest I wasted"

Bob Wooten

what do the plugs look like?

------------------
Bob Wooten
71 Camaro, 91 EFI
r71chevy@earthlink.net
www.r71camaro.homestead.com

SpRaYd91Z28

I have a "compucar" nitrous system, and I've been running 100 shot just fine and dandy, no problems ever...Plugs are always fine, and such. I decided to bump up to 150 shot, and I had results similar to yours. My mods are listed below BTW...I did'nt have the MSD or coil when I made these runs. When I installed the 150 shot I sprayed it when I hit second gear and the car pulled like crazy, but when my car his 3rd it took a nose dive!!! I am possitive that my nitrous line and cylinoid are too small. Not enough nitrous with good bottle pressure means I'm getting the right amount of fuel, but not enough nitrous...Try a bigger nitrous line with a bigger cylinoid...just a suggestion...Sorry If I was of no help... =/

Zach

------------------
1991 Z28, Black ext. Grey leather interior.

-Engine/exahust Mods:
-=MSD 6A Ignition/MSD Blaster Coil
-=Flowmaster/no cat
-=Headers
-=Air foil.
-=Superchip.
-Drivetrain:
-=2k Stall
-=1LE Aluminum Driveshaft
-=Customer Shift Kit.
-Free Mods:
-=TB Coolant
-=Modified air box
-=Removed Smog Pump (shorter belt).
-==Best Motor E.T. 13.59@102==-