JB4+BEF+Meth, usapump vs race, 30% meth

MrBlah

Specialist
Aug 31, 2019
62
13
0
Ride
135i, 335i, x5d, r53
Just switching over my FBO car from MHD Stage2+ to JB4 + BEF + methanol. I run trackdays and autocross so methanol is not allowed, but nobody bats an eye at -20 or -30 wiper fluid that runs 30-45 % methanol, I have done this for many many years with good results, -80 degree IAT reduction on a road course.

Anyone know if this % methanol is enough to switch from the usa pump backend flash to the race backend flash?

Also looking for recommendations on a tuner to dial in the car, it is dedicated to HPDE, mountain roads and the random autocross (I'm a fair weather AXer)