Well i have the Motordyne 5/16 spacer setup with mrev2 and decided to switch the spacer out for the crawford plenum. Now before i do the install myself for the crawford i am wondering if i should remove the mrev or leave it on? Any suggestions? I had a dyno and only perf mods were hks rear section, injen intake, and the spacer+mrev at 248. I was told the mrev wasnt helping me and to remove it, but those seem like pretty decent numbers i guess. I know i shouldnt expect too much more from the crawford. Decisions decisions.