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yes I remember reading the truck have a different pin out for the O2's when doing this kind of swap on a c5 vet to get flex.
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I have an 03 chevy 1500 HD w a 6.0/4l80e factory. Can you just upload the whole file an tune from there?
I don't know how to upload a tune but ill email it to you.

Needing to do the same. I know it can be done w an v8 ls, but cant find anthing for the 4.3l.

If this link was on the your web site i would have bought your dvd along time ago

interested, watching.

Interested in seeing if this can be done. I've been thinking of using a late model ecm on my syclone w a 4l80e, keeping the stock motor. I know the harness will be custom made. My sy is stock w a...

i was having a similar problem on a swap it was a bad ground to the frame