My tuner just called and said my PCM just locked up for the second time and he is giving my car back as well as refunding my money.
What am I gonna do now?

I already tried PCMFORLESS. Bad news there.

This was the only "real" tuner in Tucson/Phoenix.

The car gets KR, alot of it, even at idle. Race gas or regular gas, doesn't make a difference. He brought timng down to 4 degrees total timing, still KR. The BLMs you ask? They're split all to hell, like 121 vs 157. The car has a brand new Optispark, knock sensor, and a new LT4KM. I guess I'll buy another PCM, then LT1 edit for the new PCM and start over.
The guy is gonna send my PCM out for the second time to get repaired(3-4wks) and give it back to me. This PCM has locked up twice in the last month and a half, and before that it locked up in March, all while tuning it. Fixed or not, this PCM is done.


I just had to vent, this cars been a tuning nightmare since the motor got finished in March, I guess its still not over.

 

Why don't you send the pcm to Ion (madz28.com)? I bet he can have it back to you quicker than 3-4 weeks and while he's got it you can have him do a program for your car. Then if you do buy LT1 Edit or TunerCat you'll have a good base file to start with.

 

I honestly think the PCM itself is the culprit. When its getting repaired, just the flash chips are getting replaced.

Looking back, I had wierd KR issues with the stock shortblock, powerdyne and an untouched PCM. Tons of KR 1 day, and none at all the next. This was in 110* weather on pump gas and a stock program, no KR, flooring it in 6th gear. EVERYONE gets KR with a blower on a stock PCM/motor.
I now believe not reading knock may have been what killed the stock motor.
I thought it was the knock sensor itself, so I replaced with the new motor.

I could go on all night, I am going to purchase my "new" PCM from madz28.