PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

L Trims 25%

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Old Apr 18, 2005 | 08:31 PM
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Default L Trims 25%

My car pegs both bank Ltrims at 25% i have done all of the following. New intake gaskets intake has been off and on 3 times. New Exhaust Gaskets. I got new O2 sensors they were due. I put a stock tune in my car and i am at 21 and 22% after that just due to the fact becuse i have bigger injectors. My map Sensor is reading at 42kpa what should a tr224 cam read at ideal? Where should i start looking need help car runs bad and gas is not cheap.
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Old Apr 18, 2005 | 08:34 PM
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check fuel pressure.....the TR224 is an easy cam to tune...
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Old Apr 18, 2005 | 10:07 PM
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Yea i have a Ed write computer laying around that he tuned a TR224 cam with it. Have no Fuel pressure gauge
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Old Apr 18, 2005 | 10:09 PM
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Originally Posted by White98Z
Have no Fuel pressure gauge

well then get one....


go to Napa (or other place) and get one that plugs onto the fuel rail in the front.....my guess is your filter is cloged or your fuel pump is going out (again...low fuel pressure).....
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Old Apr 18, 2005 | 10:11 PM
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Have you done any MAF mods? If that's the case then that will most certainly push you lean for all fueling functions.
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Old Apr 18, 2005 | 10:20 PM
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if u have a maf and its bad it will max out the trims. go to advance for that gauge if u get one, they are 35 bucks there 60 at napa lol
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Old Apr 18, 2005 | 10:21 PM
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Originally Posted by WS6FirebirdTA00
go to advance for that gauge if u get one, they are 35 bucks there 60 at napa lol

lol......ok.....advance.....
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Old Apr 18, 2005 | 10:31 PM
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I forget, do 98s have an EGR tube? (leaking o-ring will = + 25% ltfts)
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Old Apr 19, 2005 | 08:39 AM
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yeah they do
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