Hey guys, Brand new to this forum I have been reading over posts and the stickies for hours trying to think of the best way to pose my question... I am having issues getting my 4.8 turbo truck to run properly I can get it to idle but if I try to drive anywhere it lugs and doesnt have power or sometimes it will rev followed by a ton of backfiring. Now, I know thats super broad and not really going to help you guys help me but after much of my own troubleshooting coupled with what I am reading here I have determined that my injector data is not exactly correct. I ordered a base email tune from a local tuner but havent had much luck reaching him since he delivered my order... so here is my question. I get how to scale my IFR on my injectors but what is a mystery to me is getting the offset and pulse correction tables set. I was told that the manufacturer would have a detailed list of their offsets but when I called FAST they didnt have any such info. Does anyone out there know correct information regarding these injectors? I want to tune this right VS. just raping the VE table as its referred to around here. boost tune 3 bar2016410.hpt Here is my current tune I am using the rest of my setup is 4.8 stock motor 78/75 turbo holley efi rails 80# fast injectors. I am using a magnafuel boost reference fuel pressure regulator set at 58 PSI and a 3 bar map. When I asked my tuner why did I come up with different numbers on my IFR than he had plugged in to the table he said they didnt matter that you could compensate with the VE table and thats NOT how I want to tune... thanks for any help you guys can provide.