Tuner cat help

[kugss]

I got everything i need for tuner cat and made a stock file. My question is what are some of the first things everyone else changes ? I'm going to change the injector size and idle rpm. Is there any kind of file sharing ? And does it matter how far back the wideband gets put in the exhaust ?

[lt170chevelle]

monodax has some tuner cat files. why are you changing injector constant? bigger injectors?as far as wideband you dont want it too far back.i would increase timing across the board a degree or 2 and increase line psi by 5-10 psi(if you do not have a shift kit) for starters. whats your setup?

[kugss]

94 z28 auto 355 9:1 comp ported and gasket matched heads lt4 intake msd 6al ATI p600b 12# pulley hooker lt 4 inch mufflex 255lph intank in line booster pump crane cam real close to cc503 1.6 roller rockers mas on pressure side on intake with more to follow soon.

[lt170chevelle]

http://www.lt1pcmtuning.com/tips.php (http://www.lt1pcmtuning.com/tips.php)
This is a great run through of tuning. has it been tuned before or is it a stock program? if its stock you will want to bring the timing down under 18 in the rpm when boost is kicking in only in your 100kpa row of your timing table.do you have bigger injectors or a boost referenced fuel press. regulator? if not it will be running lean under boost. also you will want to add some fuel via the ve table ..mostly on the high side when you are hitting boost. hope that helps. also if you are running bigger injectors, you will want to lower the minumum injector pulse width to around a 1.2. this will help with idle quality when going with big injectors.

[kugss]

Im running 42 ford motosports injectors and adjustable fuel reg and an FMU

[kugss]

How would i look at another file to compare someone else did to what i might want to change ? and what is max spark ? And does anybody have any files i can look at ?

[MEAN LT1]

Im running 42 ford motosports injectors and adjustable fuel reg and an FMU

I run just about the same setup on my car a couple of year ago. Couple of things, you dont need that fmu on the car. You have have enough injector and if your running the stock FPR you be just fine as it will increase FP for every pound of boost. You are going to want to lower your timing to about 18-20 max at wot. I would place your wideband at least 6 inches fron your collector for acurate readings. I would shoot for an A/F around 11-11.5