[stillbored]

Hey guys,

'12 335I N55 auto.

I am planning on going with Pure Stage 2 turbo and a meth kit on my JB4 set up. I want to run 91 octane (all we have in Montana) at about 3500' elevation. My question is; what fuel mods (LPFP, HPFP) will I need and will I need a custom tune?

Current mods are catless DP, JB4, BMS Intake, and BMS FMIC.

From what I understand Pure Stage 2 and meth will probably put me near 500 wheel? Not sure.

Thank you!

P.S. Food for thought, car is in excellent shape with 48k miles and all services are up to date.