Has anyone ever rebuilt a "newer" electronic engine before? I have and im worried about the bore size making it run different. Help me please.

 

I dont think i understand what your talking about. Reprograming the pcm? Or actually putting a chip in.

 

Hi HCATFREEK,

Welcome to the Chevy Forums.

OK, the PCM chip is replaceable, and a specialist like Blackbear can "burn" a tune onto one similar to the way you burn music onto a blank CD.

Read the "Performance Tuner Advice " thread in this section for more information.