Thanks fellas

 

after reading this entire thread, I think I'm more confused then before. i have an AT 2004.5 coupe and am looking at getting either the mrev2 or the plenum spacer. I just don't know which one to get. I don't want to cause any problems with non rev-up motor (ie running lean) so which mod or mods would be best. I want to be able to keep my engine cover so it'd be the 5/16" spacer and/or the mrev2. my goal is to add a couple of extra hp and maybe get a little nicer sound under the hood. let me know guys.

 

^^get the spacer. youll be fine/happy with it

i know i am

 

any particular reason you'd go with the spacer over the mrev2? hp gains/sound/look....?