StavFC

As title. I'm not sure.

Twin always seems 'fake' to me as its a single system splitting in to two (even the stock system), and have always had a single exhaust on mine.

BUT I just bought a new system, and they've accidently sent me (the more expensive) twin one, and I'm not sure if I like it now...

Whats others preferences?

Rob XX 7

iTrader: (8)

twin- because of the bumper and for as long as I can remember twin was always on hot rods and single was for boring cars

lastphaseofthis

iTrader: (8)

you like it, thread closed. C=

AmT_T

iTrader: (11)

a twin tip is typically quieter than a single due to having a muffler in each tip.

HoustonMS3

Single on a stock looking street RX7 always just looked like cheaping out to me. Maybe it's because my city is full of shitty beat up civics with low end canister exhausts.

StavFC

Mine is about as far from stock looking as possible, so thats no issue, but I see your point.

Interesting, and useful. I've already had to remove the open wastegate to try and get it down to trackday noise limits, twin exits might help too then...

SpeedOfLife

iTrader: (16)

I love the twin look on an FC. It's fair warning to challengers hehe I've always thought it looked clean and complete that way, too.

jerd_hambone

Yeah, it's very good for dropping sound levels without much restriction added. Also it looks good.

Bamato

iTrader: (6)

I've always thought having two bumper cutouts and running single exhaust looked strange. And I like the added noise reduction.

schaft

iTrader: (1)

Sound level has nothing to do with twin tips, its all in what mufflers u choose

jerd_hambone

So, the addition of another muffler and extra piping, even if it's a crappy muffler, has no affect on sound level?

Rightttt.

schaft

iTrader: (1)

It will have a small effect but not nearly as much as a good muffler set up. You can get a twin set up to be louder or quieter then a single all depends on muffler choice

ourxseven

iTrader: (1)

I am with this as well . The single ( dual tip ) muffler looks good on the first gen though.

StavFC

My bumper only has one cutout, cutout isnt the issue. I'm leaning towards giving the twin a go

Slevin_FD

iTrader: (26)

Twins effectively double your exhaust pipe area. I single 3 in is nice, but 2X 2.5in is still 5 inches of exhaust. My vote is for a 3in DP running to a 3in single to dual 2.5in y pipe.

StavFC

2x 2.5in pipes isnt anywhere near the same amount of flow as 1x 5in pipe though.

The one I have here is 3in to 2x 2.25in.

It's the downpipe that's the main thing, a 4in downpipe would be nice, but tbh I dont think I have the room.

tuscanidream

iTrader: (6)

Single ftw. Dual is just for looks because for some reason people associate it with "fast".

tuscanidream

iTrader: (6)

So you are saying that two mufflers with half flow going through each would be better than two mufflers on a single exhaust?

Rightttt.

asiandude15

iTrader: (6)

Dual exhaust just looks cleaner with the stock bumper. I thought about single for a long time just going out of the drivers side but decided it did not make my car look symmetrical when I looked at it from behind. LOL

beefhole

iTrader: (29)

I'd prefer the stock dual pipes, it looks fine on the car. However, it should have been single from the beginning, like the FB, and then the FD. But I guess the car being squarish everywhere, it probably made sense to make the rear look more symmetrical.

Slevin_FD

iTrader: (26)

https://www.rx7club.com/showthread.p...haust+diameter

Somewhere in this thread is discussion about exhaust flow cross sections and diameter in there written by howard coleman.

j9fd3s

iTrader: (3)

depends on the car, the more stock it is the better duals look, IMO. single can work, but it depends, i'm pretty sure if i slapped an N1 single on my stock vert, it would look weird....

BenRX

Defo twin on the FC Stav, single is wrong on an FC imo.

dwb87

iTrader: (22)

I love my Racing Beat REV TII!

I suppose a single would be lighter. Maybe single would be better for a track/race car.

Derekcat

iTrader: (8)

lol.. 'weight savings' No appreciable difference.

Me? I love me some symmetry.. B) Duals all day, every day.