What's Better???
 

I have a 99 LS1, it has been running lean ever since i have added a lid, cold air induction, and a MAF. I have been trying to figure out what is the best thing to do to increase the fuel to balance it back out. I was told to get a Granatelli/Predator Power Programmer and here recently I was told it was better to get a Jet Power Chip. Now I'm unsure as to what is the right thing to do.

If anyone could please help me it would be greatly appreciated.
Thanks.

how do you know its running lean? have you done any data logging? how lean are you? personally if its a little lean and you would like an easy fix, i would pick up a used MAF translator from the for sale section, and hook it up. it'll allow you to richen up the mixture

preciate it.

yeah a maf translater or go get your car tuned and that should do the trick

Or even more simply take the SLP descreened MAF off the car sell it put your stock MAF back on and I bet your problem goes away.

Other than that MAFT and autotap or LS1 Edit Tuning will take care of the problem

Thanks for the help guys

the maf is your biggest problem put the original one back on and that would help out alot aftermarket mafs are jokes. yeah i would get your computer flashed. but personally i would go with fastchip ed has been doing it for along time. he will reflah with mods to and not charge you full price. he picked me up from a 13.05 @ 102 to a 12.79 @ 109 and that is bone stock. find another computer program thats going to that good luck

Like he said