so im told this is the next mod i need to do but there is so much info on this stuff its hard to sort out. what the difference between the MREV and the MREV2. from what i've read its best to get the MREV with the spacer, is this correct? i tried the search....way to much info to sort thru, thanks guys!!! i have an 03 coupe 6mt....help please

 

you know your about to get hit by the ''search gods'' dont you? but yes, let me hijack your thread to remind the gods of one of my past threads stating, WE NEED A STICKY ON THIS SUBJECT!!!! because, i too like this gentlemen here had/have many,many questions relating to this subject. and for a new g owner, this subject is like algebra to a kindergartener, really,really diffuclut.

 

non rev engine make more hp with spacer + mrev 2 (without tune).

rev up makes more hp with mrev2 and no spacers (without tune).

With tune, spacer + mrev2 better overall.

 

uhhhhhhhhhhh, what?

if you are REVUP (05/06/07 6mt) then you want the mrev2 + 5/16" spacer

if you are NON-REVUP (03/04 5at/6mt or 05/06/07 5at) then you want just the 1/2" or 5/16" spacer

in both cases, a tune will yield maximum gains...but a tune is not necessary in either of the above two options

if you are a NON-REVUP, then you can still get the mrev2 and 5/16" spacer but a tune will be necessary or you will run lean

 

That is plain, simple and easy to read!!!

Sticky just Hero's post lol. I too an getting a spacer, actually I already ordered it last week. I have an 03 AT Sedan and am going with a 5/16 spacer. It did take a while to research the info. I almost bought an MREV2 but as I understand it, it doesn't really help much with my configuration. That would have been a waste of money.

Also (if this is to be a sticky) if you are in a cold temp area you'd want the copper iso thermal spacer...