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thanks all, I'll update you guyz with the progress, with some build pictures

I'm doing a 4l80 swap to my 2005 1500 Sierra , can I do a custom operation system after doing the segment swap for my stock tune.
My setup is as follow :
418 ls1
Custom intake
Twinturbo
3bar map...

after a a full reflash i got a check engine, with the scaner it was the C.A.S i went to the scanner for relaring it didnt work. the car is running ok but the light is bothering me.

:bangin:

Ross

thanks, it have sorted out my problem, you are my KING

REgards
Moe

can any one explain what the *** is this??

its an LS7 motor woth GM performance harnes and ecm

I need to lower the rev to 6800 RPM.

see te attchments.

I have attached my log file can any one look into it and advice back the timing would drop to 2 degrees then climb back in accelerating from stop.

thanks