G-Tech results/Problem
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Member
Joined: Jan 2001
Posts: 165
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From: CT, USA
G-Tech results/Problem
220 RWHP. This is with it running like a bag of crap. Idle and acceleration are choppy (almost like a slipping clutch in an manual car, except I know its my motor), and it smells rich. It runs fine when I first start it up in the morning, and it runs fine until it hits closed loop. Also it dies on throttle tip-in (lightly pressing the accelerator to move forward a little). See sig for specs of car. I can provide additional info.
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1990 Pontiac Formula 350
Rebuilt 355
COMPCAMS 212/212 .440/.440 cam
Flowmasters 80 series.
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1990 Pontiac Formula 350
Rebuilt 355
COMPCAMS 212/212 .440/.440 cam
Flowmasters 80 series.
Member
Joined: Aug 2001
Posts: 483
Likes: 0
From: Dallas, Tx
Car: 88 Trans Am
Engine: lt1 intaked 355 makin 277 on 25 psi of fuel pressure and stock timing :)
Transmission: A4 stock... that moved a mobile dyno a foot shifting into 2nd :)
g-tech sucks.... gives wrong times....
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305, TPI,compucam 2030 cam, air foil, 8.8 wires, accel super coil, dynomax headers, custom y-pipe, cut out, 80 series flowmaster, 2.73's and an open diff(3.42-3.73 on the way). and a stage 4 chip :0). hittin a sad 15.2 before the chip.
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305, TPI,compucam 2030 cam, air foil, 8.8 wires, accel super coil, dynomax headers, custom y-pipe, cut out, 80 series flowmaster, 2.73's and an open diff(3.42-3.73 on the way). and a stage 4 chip :0). hittin a sad 15.2 before the chip.
Supreme Member
Joined: Sep 1999
Posts: 3,197
Likes: 10
From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Your description makes it tough to troubleshoot. If it's giving you a check engine light, check the codes. If not, life would be easier if you had ascanner. If you don't you'll have to manually check over the sensors and make sure all of 'em are working alright. Or it could even be a dirty injector or something weird.
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Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.74 @ 93.25
Stock except ported plenum and dual cats
-=ICON Motorsports=-
- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die
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Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.74 @ 93.25
Stock except ported plenum and dual cats
-=ICON Motorsports=-
- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die
Thread Starter
Member
Joined: Jan 2001
Posts: 165
Likes: 0
From: CT, USA
Well, I have a scanner at work, and I'm getting about 16Hg of vacuum at idle and it varies without throttle input (waves between 15 and 16 Hg), and the O2 is about .7 or so (rich). There are no vacuum leaks, I've already gotten that reply several times, and I've checked over and over. A fellow tech suggested a valve that was hanging open. Does this sound plausible.
------------------
1990 Pontiac Formula 350
Rebuilt 355
COMPCAMS 212/212 .440/.440 cam
Flowmasters 80 series.
------------------
1990 Pontiac Formula 350
Rebuilt 355
COMPCAMS 212/212 .440/.440 cam
Flowmasters 80 series.
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