hi Ive got a 04 z and so far I have put on a motordyne 5/16's plenum spacer, and an injen cai. Now im wondering what to do next, i hear the motordyne mrev 2 is a beast and ive been reading about it quite a bit. I also am thinking about getting a pair of helix test pipes. Im not sure which one will give me the best performance and best feel. I wana buy something tonight lol i dunno ive been lazy about buying another mod now ive got the cash and i just wana do it now. thanks

Russell

 

Hi Russell,

Since you have the NON-REVUP engine and you already have a 5/16" spacer, you will make gains with the MREV2, but you will make more with the test pipes.

Test pipes are a good mod, quite a bit better than most aftermarket cats. Test pipes make good NA gains like the plenum spacer or MREV2... but since you don't have the REVUP, and you already have a spacer, you have the majority of power that can be gained from the plenum area.

If you had a REVUP engine, then yes, I would completely advise getting the MREV2 with a spacer. It would make much more than test pipes.

And test pipes are always a good way to make power even if you have a stock exhaust. Go for it!

 

hey, thanks a lot for your honesty. I wasnt sure how much of a gain it would give me (the mrev2). Motordyne is a great company though, i only have good things to say about you guys. After i installed the 5/18 plenum spacer i was as happy as could be, and it changed the feeling of my z completely. by the way whats your name? thanks

Russell

 

Thanks Russell!

Let me know if you have any other questions!

Tony Colette
Motordyne Engineering

 

+1 on Test-pipes...

 

I think your next step would be to get an accurate dyno done. You gotta have a good baseline before you can say you have any gains. Wish I had a dyno done before I started tossin mods under the hood..... ah hind sight
Props to Tony from Motordyne. His posts are some of the best I have ever read.

 

Two intake mods and the OEM exhaust system. Get yourself some test pipes.

 

+1 on test pipes. shes breathing in more air, let her exhale some more too

 

Go with high flow cats. Too many downsides to test pipes on an NA setup, imo.

 

^^ like what, the rasp? any test pipes out there that wont produce rasp? do the resonated tp's get rid of the rasp...looking for a setup tp set up for my Nismo exhaust but dont want rasp... (sorry if i hjacked the thread)

 

Yes, and the smell of exhaust fumes that will permeate your car. You won't be making any reasonable gains over HFC's to rationalize test pipes over HFC's (on an NA car).

 

Thanks I'll go with the HFC's then!

 

Taurran is right ... but another gain TP's have over HFC's is that they are generally much, much cheaper. I used to have Crawford HFC's and loved them; definitely enhanced the tone to sound like a deeper and meaner Z. The Crawford's were great quality; the only thing that pissed me off about them was that they rattled against something after I put them on. Nothing a little beating around down there didn't fix though ... just expected that not to happen out of a $500 product.

 

+1 On some HFC

 

http://cgi.ebay.com/ebaymotors/T-Pro...spagenameZWD1V
Best 100$ i've spent. Quality is good and seem to come from the same supplier as a couple other more popular companies (megan for one)
Try 'em out.