Originally Posted by
06300CSRT8
One thing I have noticed with the FRPP tune is my dashboard vacuum gauge is seemingly very inaccurate. It will show 0inhg with about 10-15% throttle, which cant be accurate. I haven't really compared versus an actual datalog yet, but I assume it wont be similar results otherwise all parameters based on load would also be all out of whack, which they are not.
Perhaps the gauge itself is hard code calibrated and working off a specific MAF output? Now that has changed it is no longer accurate? Would be strange to have it that way, but who knows.