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Thread: Way Too Rich At Part Throttle
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09-23-2007, 06:25 PM #1
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- Sep 2005
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- aurora colorado
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- 147
black- 2002 TRANS AM WS6
Way Too Rich At Part Throttle
i need a little . i cant seem to figure out why my pcm is commading the injectors to dump so much fuel at part throttle. it used to just do it on decel and high map,rpm areas. i adjusted the voltage ofset and no longer have the problem on decel but now it dumps fuel at 25% throttle and up. any advice is greatly appreciated
ive done the ve tuning and it was good in the areas i now have trouble in. it is 2 bar OLSD with 42# injectorsLast edited by vaticano; 09-23-2007 at 06:27 PM. Reason: more info
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09-24-2007, 05:59 AM #2
what are you using as the IFR? also, the injector offset vs battery voltage may need tweaking.
Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge, some checkered stripes, drilled/slotted rotors, ZL1addons Stealth wickerbill, Ruxifey LED side markers
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09-24-2007, 09:43 AM #3
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black- 2002 TRANS AM WS6
i changed the voltage offset to correct the decel fuel that was rich and that worked, but now it's rich at part throttle. and it wasn't before, so i did do a little treaking,i set the areas above 50 kpa, this is where the problem is, back to stock which made no difference.
LABELS Injector Flow Rate (Grams/Second)
Manifold Vacuum kPa {link: GM.MANVAC} Value
0 6.359375
5 6.398438
10 6.437500
15 6.476563
20 6.507813
25 6.546875
30 6.585938
35 6.617188
40 6.656250
45 6.687500
50 6.726563
55 6.757813
60 6.796875
65 6.828125
70 6.867188
75 6.898438
80 6.929688
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09-24-2007, 10:07 AM #4
put the offset voltage back to original.
there is a minimum pulse width parameter. lower that.
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09-24-2007, 10:10 AM #5
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- Sep 2005
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- 51
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- 147
black- 2002 TRANS AM WS6
i' ll give it a shot thank you
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09-24-2007, 11:10 AM #6
- Join Date
- Sep 2005
- Location
- aurora colorado
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- 147
black- 2002 TRANS AM WS6
seems to have helped the decel richness but it doesn't run right. it goes lean and bucks. it didn't help the part throttle richness at all
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09-24-2007, 02:06 PM #7
how much did you lower the minimum pulse width?
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09-24-2007, 02:06 PM #8
also, what is your IFR table numbers?
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