im kinda new to rx7s... i just got my FC 6 months ago and now im gettin some parts for it. I got a racing beat header and an apexi intake. Ive been lookin at cat back exhausts, apexi got the N1 and the GT spec exhaust. what is the difference between the two and which one might make more power?

 

Congrats on the car, first off. And even though I have no useful information to give you, I just think you should know that it will be loud. Cop drawing attention loud, most likely.

James

 

i was lookin at the GT spec from apexi and it comes with a silencer... and thnx for the reply

 

I believe the N1 comes with a detachable silencer also. IMO the GT sounds a lot better than the N1.

 

I've had trouble finding dyno results for upgrades in these forums. What's worse is that manufacturers might lie or exaggerate. But I can say the place to start is the catalytic converter. Then the mufflers, then the intake, then if you really need to squeeze out that last tiny bit of power, a header. Do a search on "cai" or "cold air intake", too.

 

i got a racing beat header and an apexi intake already, and my friend is gonna get me a high flow cat and i just need a cat back right now, and we're gonna put it on all together...

 

Im looking to upgrade as well, im your opinions whats the best combination for an n/a? Im kind of looking at a full racing beat setup, sorry to jack this thread im just curious

 

its coo... we just have the same questions... my cousin is gettin a full road race set up, but its pretty expensive... so i just got a road race header and planning on gettin an apexi cat back cuz my friend can get me one for cheap... and im afraid that if i get the RB full exhaust, it might no pass smog cuz of no cat

 

I'm running Racing Beat Header to Bonez hi-flow cat to Apexi N1 catback. It's a little loud, but not like I expected. I thought it was going to sound like a chainsaw but it's pretty deep. I like the sound of it.

 

how much was ur bonez cat?

 

Bought it used from a guy who used it just to pass smog. $180 shipped.
You can buy it for $250 new from rx7.com http://www.rx7.com/store/rx7/fcexhaust.html

 

i think i have a borla cat-back with a bonez midpipe installed now with stock exhausts... yeah RB is expensive, but i mean if im going to be spending the money on a new setup, i might as well go all out and get whats best and not regret it later

 

hmm passing smog... last year for me yes! =) im not sure but here in indiana if the car is 20years old or older u dont have to worry about passing

 

damn, shouldve bought the header and the cat together, but i got the road race header, will that cat fit right with the road race? cuz that one comes with the street header

 

Oh.... you bought a Road Race header? Umm, i've never seen cats on a road race header since it is made for the true duel setup. People usually buy this piece to fit in between the road race header and catback http://www.racingbeat.com/resultset....rtNumber=16448

The thing about the road race header is it's two individual pipes all the way back, one for each rotor. The header on rx7.com is a collected header, two pipes into one.

 

so which is better? true dual exhaust rb setup?

 

so does it mean that i should get the street header with the bonez cat instead of the roadrace if im gonna get the apexi cat back?

 

If you decide to use your road race header you will not be able to use catalytic converters and will either have to get the racing beat true duel catback or have a muffler shop weld you two pipes *one for each header* and then weld on a Apexi muffler onto the pipes.

If I were you I would sell the road race header and get the RB collected header. Buy a Bonez hi-flow cat and a catback of your choice. It would all bolt up without any custom welding.

 

I say go for the Apexi GT cat-back. I have heard it in person and I love the way they sound, nice and deep. Especially with the high flow cat, I think It will be a great match.

Also, if you say you can get Apexi brand for cheap, go with the GT.

Check this site out. I say the RB True Duels sound ridiculous, but the GT sounds much deeper than the N1. Though the N1 is running with a street port, still the GT sounds deeper, less rasp.

http://howto.globalvicinity.com/gv_w...i=66&co=1&vi=1

 

^ I have an Apexi N1 with RB header and hi-flow cat and it sounds nothing like the one in that sound clip. His exhaust diffusers are out and he doesn't have a cat to muffle the sound so of course it's going to sound raspier than the GT spec sound clip.

When I bought my N1 I was expecting it to sound like that, but listen to the GT spec exhaust clip. Now imagine that but deeper and a bit louder. That's what my N1 sounds like. But I have no doubt the GT spec is a better build quality and probably does sound better, I want to hear what it sounds like with my setup.

 

ok here is what I am planning to do then, get the RB street header with the bonez high flow cat, and then the spexi GT spec cat back. (if u got anymore opinions, plz tell me) im gonna try to get rid of the road race header. so thnx for all the help guys, lol u guys are alot nicer than the ppl in the honda forums...

 

pepper, mind if i ask how much you spent on your full setup?

 

That setup sounds good FCHeman. You should be able to pass the sniffer test and it won't be insanely loud with the cat to muffle it up a bit.

KcKhan, I paid $250 for the RB header shipped, $180 for the cat, and $250 for the N1 catback. Then about $30 for heat wrap to wrap my header, gotta keep the engine bay temps down
So in the end about $700. Damn, thanks for making me add up all the bills JK.

 

where did u get ur N1 from?

 

That's because none get posted. Unless you want to use the super-duper-accurate butt dyno "numbers".