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Mar 19, 2005 | 10:33 AM

naturalgas

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too lean

ok had my baby dynod first pull unable to go pass 4500 14.8 afr whats up here only mods are vram borla cats even the guy at shop said he never seen a stock vet that lean sec. pull same thing went home ck fuel pressure 60 at idle stays there when given he gas just bought hp tuner o2 shows inthe 900 at full throttle what to ck next? thanks in advance

Mar 19, 2005 | 10:36 AM

Richin Chicago

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From: Wilmington NC

Quote:

Originally Posted by naturalgas

This may be too easy of an answer but my first dyno, also was quite lean. I disconnected the battery overnight and the next dyno pull (2 weeks later) was much better.

Mar 19, 2005 | 01:13 PM

fsuforever

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From: South al

i wonder if u can add a fuel pressure regulator and jack up the pressure if that would help just a thought

Mar 19, 2005 | 05:32 PM

naturalgas

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my vet is an o1 i just got hp tuner so it won't be long before i can richen it if it's lean i don't think its that lean runs too good but if it is that lean don't want to hurt motor thanks for your help

Mar 19, 2005 | 05:44 PM

see5

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From: Hobart, WI

If it was 14.8 at partial no probelm, but 14.8 @WOT and you need a good scan to figure it out. A battery reset will reset fuel trims but not likely change WOT AFR.

Mar 19, 2005 | 11:30 PM

99 vett babycar

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From: pawleys island sc

you might want to post this on "scan and tune"

Mar 20, 2005 | 03:00 AM

runamuk

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From: Slave to the evil empire

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St. Jude Donor '04

Quote:

Originally Posted by see5

If it was 14.8 at partial no probelm, but 14.8 @WOT and you need a good scan to figure it out. A battery reset will reset fuel trims but not likely change WOT AFR.

If you have HPTuner and access to a dyno with a wide band then do some tuning, this condition is corrected under the "fuel control" tab and then click on the "power enrich" tab to change the PE table.

Mar 20, 2005 | 03:40 PM

leaftye

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From: San Diego, CA "leaf" "tee" "e"

Naturalgas, I'd like to help you in the future, but I can barely comprehend your grammer. I'm sure I'm not the only one here that can't read your post. If you'd like our help, help us by taking the time to make a comprehensible post. The use of white space, punctuation and case goes a long way to making a post readable. If you can spell correctly, that's cool, but it's not a biggie. Try to avoid short cuts too. Using o1 and o2 in the same post is confusing, especially where they meant different things....like you meant o1=2001 and o2=oxygen^2.