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need some help on settings with 750cc

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wishful_laser

15+ Year Contributor
242
1
Nov 25, 2003
springtown, Texas
i have 750cc injectors with the gm maft and was wondering if n e one could give me some base settings for my car. it is a 90 without the eprom and i have all the fuel mods with an afc . i have heard of different settings from eveybody. just wanted a little advice on the setttings you guys run with the bigger injectors.
 
wishful_laser said:
i have 750cc injectors with the gm maft and was wondering if n e one could give me some base settings for my car. it is a 90 without the eprom and i have all the fuel mods with an afc . i have heard of different settings from eveybody. just wanted a little advice on the setttings you guys run with the bigger injectors.
different cars are different.. how about you SEARCH or set your maft to 750cc injectors.. ya that makes sense doesnt it?
 
yeah. uh no. i asking cause i have already put the maft to 750 and my car ran like crap. and my low fuel trim on my datalogger shows it pegged lean at 118% i read that you could turn your fuel injectors to a lower injector settting to richen up the ENTIRE fuel curve thus making the low fuel trim not lean. maybe someone with 750 injectors on their setup can give me some advice.
 
I have FIC 750s and here are my MAFT settings 8-base 8-idle 2-mid 5-WOT. THESE ARE NOT MY ONLY SETTINGS I still use an SAFC. However, my timing gets pulled so far back that, by the end of 2nd gear I'm getting 27 timing advance. I got so sick of it that on Monday of this week I ordered and EPROM ECU and chip.
 
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