i see this a lot... whats the difference nd how can i tell what is what?

thanks

 

Do a search. I know there is a thread on this forum that shows the difference side by side.

 

I think it only appears in 2005 and 2006 MT models of both Coupe and Sedan.

The intake is different (different runners) valve timing is different and it gained about 3-5 hp and lost a bit of TQ but the redline was moved up to 7200.

 

do all 06 mt coupes have the "rev up" motor?

 

That is my understanding.

 

Revup: '05 - '07 6MT coupes and '05 - '06 6MT sedans.
Non-revup: All other first gen G35s.

Easiest way visually to tell them apart is to look at the cam covers:

Non-revup


Revup

 

sweet thanks that makes it real easy!