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hello,ken
if you are there. i have the diablo delta that you tuned for my 5.4 f250.Well i have a new 250 with the v10. my buddy has the same 5.4 i cant rember my ecm code. but i installed it in his truck and ran rough in the tuned stages but fine in the stock stage. Will in it need to be burned agian.Im in allentown pa.
Yes, the chip needs to be reprogrammed for his truck. Doesn't matter if he has the same engine or not, there are dozens of PCM codes for each engine and it needs to be programmed for the correct code.