Speed Density on Evo ECU

**Goat Blower** · 11-17-2009

I'd say the driveability with the MAS would be better, but SD is really nice for packaging reasons. Having an aftermarket BOV venting to atmosphere is nice, as well as being able to drive if you blow off a IC coupler and don't have any tools with you.

123abc · 11-17-2009

Quote:

Originally Posted by Goat Blower

I'd say the driveability with the MAS would be better, but SD is really nice for packaging reasons. Having an aftermarket BOV venting to atmosphere is nice, as well as being able to drive if you blow off a IC coupler and don't have any tools with you.

That's whats nice about having a gm Maf-t right before the bolt-on tb elbow.