I have the numbers off the cover of the ecm. Here they are, ser#1227429, the next number ended in 4787 and the chip had ARW0356 on it. This came out of a S15 pickup with a 2.8 v6. When I bought this truck someone had already put a 4.3 v6 in it's place. Both engines were tbi equiped. Of coarse the 4.3 runs like crap on the 2.8 calibration. Does anyone know if this ecm and or chip has been hacked or documented? I would like to burn a chip for the stock 4.3 in hopes to get the driveability and economy back.

Thanks, any info will be appreciated.
Steve

 

I guess I posted this in the wrong forum, sorry. I reposted it in the DIY ECM forum.

See Ya!

Steve