Guys,
I have some questions on this SD tuning that i've been trying to under take. I start the car, let it warm up, get some info and find that the map sensor hold at 11-13hg? Is that about accurant at idle? Please review the car in the sig. I want to make sure i don't have any mechanical problems before i begin changing things. I read everywhere else that their map values are atleast a little higher and those are stock motors.

Brendan

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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,

To see the ROC, Check out the webpage Here

 

11-13Hg?!? What the heck is that??! ROFL, j/k, j/k (I am so use to kPa that I have forgotten Hg ... lol). Anyhow, that corresponds to 37.3-44kPa. For the 219 LPE cam that is pretty good. I would actually expect to see LESS vacuum but hey ... more vacuum is better I would say you are good to go.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Tim,
THANKS!, that explains why when i tuned the HELL out of my lower VE(20-30) it didn't do anything!! AHHH!!
How do i do that conversion? How did you get 33-40?


Brendan

 

Ok, after a little more review of Diacom and what Tim said, i've found the english ---> metric conversion

Later on,

Brendan

 

FYI, mine idles at 11"

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1988 T/A,
9" Ford, 3.50 gears, Auburn posi, 700r4 -w- 2100 converter, 360ci, 9.8:1 cr,
AFR 195 Heads, Weiand #7525 intake, Lunati roller 219/227, .479/.480, 112 LSA
Holley 700cfm 4bbl on TBI truck 7747 computer and chip by Howell-EFI

 

FYI ... ROFLMFAO ... my bigazz 230 cam idles at 70kPa ... that equates to 20-21Hg

Tim

------------------
TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Tim,
I did some more runs with diacom, at idle, and in metric units this time(DOH). I was at 60kpa! with my little *** 219lpe cam.

Brendan

 

Now THAT is more like it. 60kPa? Cool. I was seeing about 55kPa with my 218/224 cam. 60kPa for the 219 sounds about right to me.

Tim

------------------
TRAXION's 1990 IROC-Z
Best Time = 12.244 @ 112.51mph (1.778 60' / 7.819@88.32mph in the 1/8)
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels.
Gunning for NA 11's with bigger cam, bigger stall, and bigger exhaust.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

 

Yep, the tuning begins. I'm still having problems getting any other than the usual KPA values... in this part of Ohio(north western part) its really flat... the ONLY hills are like overpass bridges. I'm not real sure as to how to use TC's graphing function. It seems that if i make the graph look pretty that my car is way out of tune when i run it again and fix the one colums values the graph looks all jumbled up and not so pretty so to speak.

Brendan

[This message has been edited by leirch (edited May 13, 2001).]