Starting to slowly my 2006 6mt and I was wondering if the lower plenum from a non rev up paired with a Motordyne 5/16 spacer would give me solid gains. Thank you

 

yes it would

 

Meh "solid" would be the mrev2/plenum spacer combo
With the non revvy plenny lulz, except moderate gains honestly
A tune will do wonders for both setups

 

Well, considering the MREV2 is a modified non-rev lower plenum, it's certainly a good place to start. It could even be considered an MREV1. One could even search for a DIY plenum modification thread where the owner of said company provided input on porting a plenum, and end up with something pretty close to an MREV2.

This just happens to be the setup I have on my car. Expect a nice jump in mid-range torque, but without a tune, the plenum causes the engine to fall on it's face after 6500 rpm. The stock revup plenum will keep pulling until you bounce off the rev limiter if not paying attention. After a tune though, it pulls all the way to redline.

 

meh from non rev plenum to mrev2 you will see minimal gains. even tony has said if u already have the nonrev plenum its not worth it to go to the mrev2. its the longer runners that provide the most low end gain

 

mehhhhhhhhhh