Think i may be the first on fly switchable maps

Rob09msport

Major
Oct 28, 2017
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Monroe CT
Ride
09 335i msport le mans 18 x5
For anyone's info only blue wire to pin 16 Is needed on dme.
Anyone know if 2 snow 375s is to big cause im getting a backfire when I let off and i think the 375s are rated at 40psi so if that's the case and I'm running 200psi bypass then I am running alot of meth. I was told to get the 375s but now I'm not so sure