yeah just splice it into the return line ,and connect the vacum line to it.dont forget to disconect the line form the stock fpr though

i have a chart somewere that shows how much more an injector flows at what presure ill have to find it.

and those calculators are just guides for now i would bump in about 10-15 psi base presure then just ur injector constant so it runs right, but dont touch ur ve table, adjust the injector constant table till it idles liek it did without the fp jacked up

 

Dave or anyone Ive got a big question. What sort of boost would that turbo make on my car with the exhaust I have if there was no reference on the wastegate???

the reason I ask is because of this. I was going back though the vac lines today..and noticed that I was a idoit and placed the reference line off the check valve which only lets cav by, not positive pressure. What concerns me is that I leak checked the system and without that reference I only could manage 16psi of boost(that run last night)??? Somethings wrong here. Also my vac is 13" when the car is idleing... I know ive been over this before but is that normal?? This is very concering to me.

 

Mabey the wastegate is leaky and only will hold that much??? I dont know but I have the night off and want to get the car right as this is concerning to me!!

 

that normal the ex was pushing open the wastegate, good thing u didnt do that with a 12 psi or 15 psi spring the thing would have made close to 30 psi

did ur car idle with more then 13 inches of vacum before?

 

na its always been arround 12-13" of vac since the cam and heads. Just wanted to make sure that was a somewhat ok number

Yea Im glad the large spring wasent in there either. So now I have to put back the shims in I took out and try it again..lol

 

yeah u will lose vacum when u do heads and cam, 13'does seems a lil low mine pulled 12" inches with the radical cam but if i had an underkstyle setup im sure it would have only pulled about 9-10"


get that boost back up and get out the gtech and video camera

 

K man, im gonnna go play with it ill be back on in a bit

 

Now that the check valve isnt there we got 7.93 psi steady without the controler hooked up with the shims.

With the controler hooked up were good to go, no boost drop what so ever, just keeps building up to where I want it. It is a little rich though .. 11.5 give or take a .1 But I think this is lower because of the exhuast on the car....

So im gonna fry off another chip, take a little fuel out, turn the boost up a lbs since at 12.5 im in the 80 percent range for DC up to 105mph.

 

uncapping the ex system will lean it out alil bit so be careful,

u can run them upto 90% dc and not worry about it

 

how lean??? .5 or so? Should I just leave the fuel as is? Its 11.4-11.6 average

I was going to aim at 11.8 or is that too high

 

it depend son the setup, u just have to uncap it and see how much it leans out i woudl say .5 shoudl be about it

i would tune it for capped and uncapped ex system and just have 2 chips since u can swap them so easyhave a street chip and a track chip

 

Ok well im going to see if this tune is ok, its in the middle of the road as im aiming for 11.8 on this tune. Ill go gtech it and log if all goes well. I cant video tape at the same time though...lol sorry man I need a passanger to help me when im doing too much.

 

velcro it to the steering wheel again, ur giving up power tunning for 11.8 shoot for around 12.5

 

well it may be too lean im not sure as the KR is there at the top end and the boost spooled slower then im use to because of the crappy excuse of a launch?

g-tech said 14.5@105mph so I know thats not right...

0-100mph on the log was a solid 12.94 seconds. This was 13.5psi. The injector DC was down but it was a tad to lean for my comfort at some areas. You wana see the log.. its not as nice as Id like it.

EDIT:And check it out...am I reading that right ...roughly 5.0x 0-60Mph time??
Just added datalog

 

richen it back up then and see what happenes if it runs better richer then let it have what it wants.

dont forget an wideband o2 can be off like .5 from one to the next

 

I got one more shot at driving it before it starts raining here, im just going to add some fuel back in and take it out in a few min once shes cooled back down to normal.

Dave it ran good at the leaner set up I know that as my 0-100mph times were never lower then 14 on any datalogs except that 12.5 sec one last night. Its likes it i just dont want it to be too lean.

my 14.37 second pass at the track yeilded a 14.68 from 0-100mph on the datalogg with street tires. So I know that the car is liking the added boost and leaner mix and its nice and cool out so itll prob richen up when its 70-80 degrees out. I just dont know..i guess

 

videooooooooooooooooooo

 

Got ya a video dave..lol The audio sucs thanks to my crappy camera..lol

I literly just took the tune Ive been running at the track and just added 1psi. Seemed to run great. But I made 2 attempts at 1/4 miles and the second one was a tad slower. As my intake temps were 15-20* higher in the end then the first run even though I drove the damn thing 15 minuets trying to cool it back down. But anyways ill link that vid up in a few with the dataloggs to if you wana see what the cars doing on paper.

One thing though, I havent really went WOT on the road in a while and I can say this...the car feels faster without the cutout on I know that as latly it seems a tad sluggish up top...high rpms.

 

 

No kidding....LOL I wana see some of his turbo V8 ones asap... donuts and all!

Heres the log... That ARPR needs to get here asap.. damm still maxing the injec. I know its a little rich but its the tune for when the cut out off.


0-100mph in 12.84 seconds... Ill take that on street tires and no cut out/resricted exhaust

and your vid..dave.... http://www.youtube.com/watch?v=kih-h...ature=youtu.be

too brown????

 

the plug looks really good actually. on your launch, are you WOT and on the brakes? looks like its not spooled up until almost 30mph

 

On my launch im just on the brakes and at about 1600rpms..any higher and I just light them sky hi on the road

The better run of the 2 is on the video im uploading now. I havent went WOT like this on the road since I started hitting the race track....

 

yeah that plug looks really good, do me a favor disconect ur downpipe at the turbo and get me a picture of the turbine wheel, it should be a whitish/tan color as well

the mph on the gtech has always been close hasnt it? id just go by that not the et

 

Yea the MPH was always 1-2mph at the most faster then track times but the ET was off quite a bit... g-tech said it was always slower...

I cant get the pipe off tonight but ill get at it tommorow afternoon. I got a few min to work on here then. Ill take a pic though. I take it if its dark/black its a bad thing??

Edit:Actually Ill go get her off really quick itll only take 5 min.

 

where at in Ohio are ya?

 

Out in the country arround sandusky.. you from arround here too?

 

Here... the audio suxs! http://www.youtube.com/watch?v=Gnb_K...ature=youtu.be

 

from the posted datalog

0-60 = 5.2 seconds
0-100= 13 seconds flat

 

Well you called it Norwalk in your video so you must be a real Ohioan

Im deep country Oregon a few block off the lake by maumee bay state park, off route 2.

 

@ dave when do you consider the start of the run?? I use the last 0mph cell before the car moves=12.84 sec
Does this look normal?

 

Oh ya its norwalk to me. You dont live to far man. About 45 min at the most from where Im at

 

turbine wheel looks perfect so ur afrs are pretty damn close,also i just noticed ur not seeing full boost until 3rdgear,something is really funky with ecm boost control.well have to see what happens when that new spring comes in as u prolyl wont need the ecm boost control once u have that

thnx for the videos

now if i can get u to spool up the turbo on the line at the track that thing will be ripping off 12 second passes

 

Cool, now i know what the turbine should look like

Yea I dont like how its taking so long to make my commanded boost.

Would the cut out being on make it spool sig slower as I havent really looked at dataloggs with the cut out on for awhile.

 

yeah it will spool a lil slower with the full ex on the car opening the cutout will make it spool better.

u really shoudl have a 3 inch ex system on the car tbh

oh yeah and i go form the last 0 record to the first 60/100 records

with megalog viewer it went from 59mph to 61mph so i splt the differenc ein time between the 2 records which i belive is .150 seconds have to dbl check again

 

Ahh its not a big deal on the times on the log.

I know my exhaust. suxs on the car. The only reason I havent changed it is because I really only have been going into boost at the track. I really dont drive it all the time or else Ill be beating the crap out of it all the time..lol The exhaust still takes that horrible bend over the axle and I really notice the difference at the track when its reving high. Im praying for no rain on wednesday night. So I can head to the track.

You see my injectors were maxed for a slight bit...opps. I think 12.5psi is just the limit for those injectors with the fuel pressure I have.

 

afrs were fine, i would dbl check it with cutout off and if they are good run the tune u have

and dont worry i should have some iroc videos tommorow , been waiting to get paid so i can pick up new battery for the car the one in it now dies after 5 moins of the car being off so havent been doing anything with it

 

Cool man, yea id like to see some vids of that car. Wana see what you got going on that turbo set up. I love vids!

Oh ya that was the same exact tune I ran at the track all those times in the last week, just added 1psi so it should be ok, but ill keep a eye on it the first time down.

 

Ya know with mine, 1 simple 90* turn out for a side pipe look totally killed my high RPM band, I had to poke 2in hole in the bend to get it back. was crazy how much it change it.

 

I wish I lived in the sticks more because Id just leave the cut off..off.

 

when I would ask, people always said a turbo muffles stuff down enough you don't need a muffler, why most had a 2-3ft pipe that dumped under hood or by the front tire.

course the fumes might get to ya

I run mine under the axle with a section of flex so its only a slight lazy bend to run it out the back center but keep it mostly straight pipe from Y on back. [bullet glass pack]

 

lmao on my tt iroc both my downpipes dump at the bottom of the firewall its actually pretty dam quiet till i get on it , then its pretty dam loud between the turbos spooling up and the ex ,

 

sorry man no vids today, i have been having some tunning issues with the car that were internitant , so today i goto fire up the car and it wont stay running.so i get pissed off and im about to rip out the megasquirt, the 350 and the twin turbo kit and replace it with my 3.0 or go buy a 3.4 and drop one of the turbos on that.

anyways i look over some of the settings in tunerstudio and notice some of the tables are filled with garbage instead of values.turns out when i uppgraded my ms from megasquirt 2 base code to ms extra code i forgot to supply tuner studio with the right ini file.( used a old ms2 extra ini -ms2extra2.x.x instead of the one for the extra code i was using msextra3.1.1)

so everytime i would flash a new tune it was filling up random memory regions with trash causing my headaches


so anyways today i grabbed the newest ms 2 extra code (msextra3.2.1) and made sure i loaded the right ini file into tuner studio.and just to be on the safe side im starting the tune over from scratch so im going to whip up a base tune tongiht and ill flash the ecm tommorow and hopefully start driving it a gain

 

Cool dave, thankfully you found out the problem on the MS

Tuning can drive me literly insane sometimes!!! But yet I keep doing it..

Amazed it actually started with a mess of information getting sent to the car. I started my car a few times with no chip at all in it...opps. And I woundered why it was running like complete garbage. Its not the same thing as what you were experiencing but I can relate to headaches. Man do I have stories already and only been tuning for 6months..lmfao

 

On the Afpr, There is 3 ports. 2 on the bottom part for fuel and there is one on the top. The top one i take it is for a vaccum reference??

Also do I literly take the old regulator off??

 

top port is vacum/boost refrence line , th e 2 ports on the bottom one is inlet from fuel rail the other side is the outlet back to the fuel tank

u leave the stock fpr in place just unhook the refrence line,the only time u would gutt the stock fpr is if u wanted to run a lower then stock base fp, but since ur raising the fp u can leave it alone. the one u are installing will override the stock fpr setting

 

btw set base fp to 60psi with the engine on and refrence line unhooked this will give u enough injector flow for around 340-350 hp.

once u set the base fp plug the refrence back in then adjust ur injector constant table to get the car back to idling the same as before u changed the fp, this should get it so u dont have to retune ur ve tables

if ur not going to turn up the boost to much more u can get away with around 50psi base fp

 

Cars a POS!! Pisses me off, why is my turbo lag so so bad now? And actually on 2 runs tonight I could only manage 7-9psi.

I actually had a .006 RT and lost because the car was going so dammm slow.

 

Man my best 60' time was 2.32 and I was launching at 2200 rpms if that tells you anything and managed a best 14.85 tonight. What a dissapointment.

I could have messed up the wastegate??

 

datalogs?
need to see what ur boost issues are

also what exactly did u do to the wastegate,,weres the refrence line hooked, u using the ecm boost control?

sure u dont have a coupler that is partially off or ripped

what kind of trap speeds did u have ??

also did u install the afpr tongiht before u went?

 

I only took one recorded data logg. It builds up to 12psi but never again did I get that amount

The reference like is at the manifold

The AFPR isnt here yet

All I did to the wastegate was add the shims in it

Last week at the races I had one run where I never made more then 5psi.

I need to look over the boost controler but it wired right and correct.