I think i would try it the FRPP tune is only putting out around 18psi peak boost on my RR at WOT on the big end at full load. Pretty sure they should be good for another 3-5psi
Yes i will be looking for a custom tune for sure this isn’t near fast enough i just got out of a TRX! I was told but a guy that posted up a YouTube short of SPD downpipes he was the test truck and said they will release by end of month i hope so i want some too.