ltft at 25 when crusing
06-12-2009, 07:57 AM
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ltft at 25 when crusing on efi live when the ltft are a positive number that means the coumputer is adding fuel right?.
when driving around in cl the ltft so to +25 what do i need to do to change that. it a ls1 cam only 228/228 in a 88 notch.
when driving around in cl the ltft so to +25 what do i need to do to change that. it a ls1 cam only 228/228 in a 88 notch.
06-12-2009, 09:48 AM
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Could be a number of things - MAF calibration could be off due to repositioning of the MAF, VE tables need adjusting, etc.
Are BOTH banks showing 25 or is it just one side? What fuel pressure are you running - low pressure would also cause those problems.
A lot of variables to look at for this.............
Bird
Are BOTH banks showing 25 or is it just one side? What fuel pressure are you running - low pressure would also cause those problems.
A lot of variables to look at for this.............
Bird
06-12-2009, 11:34 AM
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both banks. has svo 42's and a 85mm maf he said his fuel pressure was 58 but i have not checked that my self yet.
i have 3 differant 85mm maf tables one from my cam only camaro, one for a 03 z06 and the one that came with his. also i have 2 differant injector flow tables ive tried and same problem.
raising the ve table in the area its lean will give it more fuel right?
also could i raise or lower that part of the maf table?
i have 3 differant 85mm maf tables one from my cam only camaro, one for a 03 z06 and the one that came with his. also i have 2 differant injector flow tables ive tried and same problem.
raising the ve table in the area its lean will give it more fuel right?
also could i raise or lower that part of the maf table?
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06-12-2009, 03:32 PM
#8
Of course it's going to read 14.7, but it's taking some amount over 25% (that's the limit for those, I'm sure that your STFTs favor + as well) of what you base tables are asking for to get there. Think everything is ok? Put your car in OL, clear trims and find out what it drives like without correction. It probably won't run, and if it does, WOT will be insanely lean.
You have the tools, use them. Make sure that your fuel pressure is correct if you have an adjustable system. 58-59 psi
06-12-2009, 05:28 PM
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here is teh tune that it had in in when i first got my hands on it. i see so many things way out its hard for me to know where to start.
its a 04 gto motor with a 228/228 cam, 4l60e 3200 stall 3.55 gears. svo 42 injectors and a 85mm delphi maf
its a 04 gto motor with a 228/228 cam, 4l60e 3200 stall 3.55 gears. svo 42 injectors and a 85mm delphi maf
