69ChBuLQ4

iTrader: (1)

Hey guys I have an 2005 iron 6.0l and I swapped on an ls6 intake and a gm ls1 hot cam and am running everything with an 02 camaro computer. My AFR is reading below 12 on startup and it gradually works its way up to 12.7 and about that time my short term fuel trims kick in and trim it 30% to get it to 14.6... In addition to AFR being rich, the exhaust has an extremely rich smell. So can anyone tell me how to begin correcting this??

2xLS1

iTrader: (25)

What is the fuel pressure at the rail and what size injectors are you using? Also, guessing this is a swap of some kind, what kind of MAF? 75mm or 85mm.

69ChBuLQ4

iTrader: (1)

The number on the side of the injectors is 0 280 155 931 but im not really sure what the # is i think it is 28 but some measurements are taken at less than 58 psi. The maf is 85mm.

2xLS1

iTrader: (25)

You can try this. This is your file with the truck 85mm MAF table copied to it. That should lean it out some. The fuel trims don't look that bad once it fully warms up. Those injectors are stock 01-04 LS1 injectors.

69ChBuLQ4

iTrader: (1)

Thanks Ill try that tonight, so the injector table is the right one then??

2xLS1

iTrader: (25)

It is if you have 58psi fuel pressure.

69ChBuLQ4

iTrader: (1)

Been getting a misfire code now that I cann't figure out. I was thinking of checking the coil packs as this was a junkyard engine, does anyone know the primary and secondary resistance?? I will post the scan once i fix this problem

2xLS1

iTrader: (25)

Your misfire tables in the Engine Diagnostic section are still the stock settings. You will set false misfire codes with almost any cam that lopes and stock tables. The lope of your cam looks like a misfire to the misfire detection in the PCM. It is looking at the rate of acceleration of the CKP sensor. The false misfires will keep a lockup converter from locking up too if you are using one. You have to either raise the values in the tables or disable misfire detection completely. If your mail order tuner know about all your mods and gave you the tune you posted he didn't do a very good job.

69ChBuLQ4

iTrader: (1)

Ya I told my tuner it was misfiring and he acted like it shouldn't be but he didnt change the misfire tables. He sent me this new tune because i told him my car dies when I shift it into reverse or try to throttle and let off of it, but its basically the same as the old one.