I currently have the vishnu Stage 0 + HKS Downpipe, and am experiencing some boost creep.. Here's how it goes.
3rd 1.1 bar
4th 1.2 bar (hits fuel cut off)
5th 1.1 bar
Now, if i turn down my MBC, to not hit fuel cutoff in 4th gear is reducing my boost levels in all gears dramatically.
what can i do at this point?