I currently can cut a 3.1 0 to 60 and 11.19 quarter mile and am looking to hit 10s. My options are e85 or meth which I want to go meth but want to do something similar to what I did on my n54 with flex fuel logic to have a safe 93 map that when meth flows ramps boost. I have a mission tune that alex said will add up to 4 degrees of timing if I run e30. So I figure it may do the same for meth which would be great but then I wonder if I could stack a jb4 to run 3.5 bar sensors and add 2 to 4 more psi since stock turbos are supposed to hit 24 to 26 psi before choking. My main concerns are if jb4 still needs maf sensors unplugged and is their a downside to this. I assume the reason is since the dme doesnt see actual boost anymore the maf readings would be off but idk if with a backend flash in could keep them. I literally just replaced them 2 days ago and they are expensive little sensors lmao but seriously tho I want to know pros and cons for maf like will a jb4 stack not be as smooth @Terry@BMS