Hellonwheels

do you guys have pics of fcs with a single exhuast setup? if you do whats the performance like? whats your setup.. etc.. thanks a lot

1987RX7guy

iTrader: (3)

posts like this have been made before. The performance increase is marginal at best, not to mention it looks unbalanced and most setups are generally loud as ****.

FC_DRIFTER

My setup... Corksport downpipe, straight pipe, Corksport cat-back. Don't know the performance increase (never drove the car with the stock exhaust). And yes.....its loud. If you are looking to be quite, go with the dual racing beat exhaust. Single 3" isnt for you if you want quiet.

jarred

i think the weight savings are worth the single IMO

CodyHokieFD

here is a picture of my car with a single apexi N1 exhaust. It was put on by the previous owner

Impreza2RX7

The performance is MUCH better than stock, and weighs alot less than a dual setup. What do you mean marginal, 1987RX7GUY? Have you dynoed a single vs the Racing Beat dual that you praise so highly? I have a 3" Thunder Fabrications DP/MP and 3" Corksport Catback, BTW.

KillaKitiie

good power!

makes listening to my cd player pointless.

1987RX7guy

iTrader: (3)

True duals are an N/a Exhaust while Thunderfab dp/mp and CS cat-back are for a Turbo car. Who do you think will have more power? duh....

For an N/a:
By simple mathematical calculations the weight savings, and therefore performance added, are marginal due to the fact that you're only reducing the weight about ~3-5% of your total vehicle weight. The horsepower difference is also neglegible since both single and collected duals can be tuned to the same rpm range, totaling virtually the same horse power outputs. True duals can only be tuned by length and pipe size since there is no collection point so the power gains are more limited.


Don't think for a minute that i'm saying True duals aren't up to par. They are the only FULL setup(atleast from MT) that have been tested against other setups and have a published dyno chart(in their catalog) showing gains that no other company has come up to challenge since.

When someone else comes out with a rival system and publishes numbers we'll talk. Facts are better than an *** dyno I can tell you that. So until some other company can come out and say they have something better i'm staying with what I have. If he's going to BUILD and TUNE his own exhaust then that is a different story. Of all the systems out there that are PRE-Made how many have you seen that are "Tuned" for XXXXrpm or for engines moving XX.Xcfm at x,xxxrpm? NONE. So all the collected exhausts out there for N/a's aren't really tuned. If they were I strongly believe that their manufacturers would be blasting us with all those cool figures and numbers, their R&D and design can also be used as an ad, would be a waste not to mention it.

Impreza2RX7

I was speaking of the dual catback for the TII, not the True Dual Headerback. The original poster didn't say whether he had a N/A or Turbo.

onePOINTthree

i like duals personally, but to each their own. i think one of the better quality (apex-i) singles wouldn't sound too bad

1987RX7guy

iTrader: (3)

Once again Marginal weight-derived performance. Driving with only 1/4 tank of fuel will probably gain you more performance. Or going on a diet


Power gains due to pipe diamiter? I have no clue, but take into consideration that RB has hp numbers posted. A lot of other people don't. Its the best system i've ever heard on an RX-7 aswell(not that it matters performance wise, but a plus...) I believe it has been NZconvertible that has time and again defended the split turbo exhaust compared to a 3". I believe, if memory serves me right, that he says that 2.25 or 2.5" pipes will perform better in flow than a single 3" If he chimes in i'm sure he'll correct me. So there are still better options than a single 3" as far as flow.


If you want to be cheap then sure grab a thunderfab 3" and get some straight 3" pipe and a flange and mate them up. There perfect 3" exhaust. No restriction, but wait you're now going to sound like a tractor on steroids(trust me i know....) and get caught by every cop in town the first few blocks you drive. Same applies for cheap universal type mufflers like those used in SSautochrome/CS systems. They are just plain garbage made to buzz like a crazy bitch and attract attention. Sorry but i'm not that insecure to need a muffler to get me attention. If its a track car things might be different but on the street its pointless.

CodyHokieFD

Once again, I didnt put mine on So i cant really figure any difference....


but it gets the job done for now I guess, until someday when I have more money and maybe change it up.

rwd

i like both dual and single.. but since the duals were originally part of the car ill just stick with dual.

vrooom305

thanks for not seaching and bringing up a topic that has been covered one hundred bajillion times

and to answer your question I have a CS catback and I liked it...the reason why I say "liked" is because my motor blew an apex seal, so I don't use it any more.

Impreza2RX7

RBs entire turboback nets less HP than most DPs by other competitors. Thunder Fabs DP/MP alone nets 45HP, "according to their website." Also, the 50 or so pounds I save by going to a a catless 3" single contributes to my RX-7's svelte 2605lb weight with a full interior. I agree, the RB system is more "streetable"; but, when I buy one to quiet down my car, I'll dyno both exhausts, and I'm quite certain which one will win. And it will be driven on trackdays.

PS, I've had my 3" catless exhaust on for 10K miles and still haven't been pulled over, despite boosting whenever I see fit.

KNONFS

iTrader: (14)

Do you even know?!?!?

Plain out garbage? Use the same pre silencer that RB sells on one of this, and then talk. Have you heard a RB exhaust sytem WITHOUT the pre silencer?

Tofuball

Ooo, I wonder if that would work on my N/A. I could use 45 more HP

I should also pick up two of those for my corolla.

I wonder if I run them in series if the power is multiplied or just added together?



Just putting HP claims up on your website doesnt make them true.
If you belive that kind of stuff, head over to Turbonator.com and stock up on teh powah.

Impreza2RX7

Well, if you drove a turbo instead of a slowass N/A, you would notice the power increase after replacing a precat and cat with a 3" catless DP/MP. Smartass.. j/k

hIGGI

iTrader: (7)

Node

iTrader: (1)

hey santiago, he meant duals as in dual exhaust like what comes stock, and the porksport exhaust is for both turbo and non-turbo cars.

Node

iTrader: (1)

thats what i want to do, get the 3" DP and presilencer from the rb turboback and have a custom single catback made with a magnaflow muffler or something like that.

crashdummy

feed sonic hsr

KNONFS

iTrader: (14)

It works