I know this has probably been covered because I have been reading about it for like an hour and a half on this site. I just haven't seen it answered directly. I have a 2003 Touring. I've been reading all about plenums, plenum spacers, MREVs, etc.... I've also seen a lot of talk about Rev-up or not Rev-up. From what I've seen the only rev-ups are the '06 MT models - is that right or did I misread? Meaning I would have a non rev-up engine...? Thats the first question.

Theres a big debate on the hp gains coming from just the md plenum spacer vs just the MREV2 - and then putting them both together for optimal gains at the redline. There's also the option of getting the whole plenum replaced - the aps tall boy looks really cool. Then the debate of the strut bar having to be removed - can it hurt performance - do you really need one etc... I have a couple questions about these things.

1. With the '03 AT, does the MREV2 really apply to me or does the plenum spacer do a good enough job on its own? Or is it the same deal as with the newer models - that if I want optimum power/torque at redline I need both?

2. I've seen the dyno tests for the 5/16 vs the 1/2 plen spacer and it seems the difference in hp (probably like 1HP at redline from what I've seen) is probably not worth the money...do you all agree?

3. If I got the whole new plenum should I get the MREV2 as well - would I still be able to install it with the new plenum? Which is better the Crawford or the Tall Boy? Are these replacement plenums much better than just the plenum spacer or is it mainly for looks?

4. The strut bar - do we really need it? If not why did Nissan sacrifice the size of the plenum for it in the first place? If we get the new plenum or plenum spacer then would you recommend getting the flat strut by Crawford or just not worry about it?

One more thing and this is probably a really dumb question but I see abbreviations all the time and I don't know what they mean like NA, WOT, IMO (in my opinion?) and then theres BUMP and +1 (means you agree with the poster?). Can someone enlighten me?

Thanks guys, sorry this is so long but I just wanted to get direct answers for all of this stuff. Also...TURBONATOR ROCKS!!!! I get sarcasm....

 

You don't NEED the strut bar, but your handling will suffer w/o it. It adds support and makes corning super sweet. As for spacers, they're all a little different. I just sold my Kinetix SSV (Super bling manifold, but costs a butt load for not that much gain) and picked up an AAM angled spacer. Great gains at a decent price.
NA= A naturally-aspirated engine or normally-aspirated engine (aspiration meaning breathing)
WOT= Wide Open Throttle
IMO= In my opinion
Bump= You want your thread or post to go to the top of the page for more views or need a question answered... Or you're just a post ***** looking to up your post count.
+1= You agree or you would like to find out the same thing that was asked in the post above yours or the quote you're using.
Newb= search
= SUBRWHO!!!

 

As for the spacer, get the MREV2 with the 5/16 iso thermal

There is a TON of information on these topics available.

 

Okay thanks...I saw that 4 page thread on the MREV2 and the 5/16 thermal read it for like 45 min. Just wasn't sure how it applied to my exact model. I'm guessing by what subrwho said the strut bar isn't necessary - and I know I've read that with the 5/16 it still fits but with the MREV2 and the 5/16 will it fit?

 

Oh and I just read that thread with the guy who likes guns and wanted to know about plenum spacers.....hilarious

 

NM on the last question...found answer.