Does anyone have a stock tune file (unmodified - like an original back-up) for a 1996 Z28 (LT1) with automatic trans? I am using JET (formally tuner cats) to read/write the PCM. When I got the car the PCM was laying against the firewall and the mounting tabs are broken so I am thinking that I may have a bad tune problem (VIN of the PCM matches the car).

I am currently getting a lot of knock retards through the rpm range. I have been logging and pulling timing out and she is starting to really perk up but I just wanted to rule out possibilities of alternate problems.

thanks in advance if anyone has one!

 

If none here has one, you could try over here.. OBDII Tuning

 

Thanks man! Someone sent me a screen shot of their stock spark table (it was for a 95) but it is close enough for me to rule some things out.