Depends if they had pre-exsisting maps of your car on their computer i assume. I had mine tuned, took some time, and when my PFC got waterlogged and sent it back to basic map settings, to retune it, took fuck all. Just reloaded my map back onto the
ECU.
My 34 goes on October 18, and have been told due to headers most likley wont crack the 300 due to flow restriction. Proberly get 260-280atw. Good enough for me
but we'll see.