FC T2 exhausts- Do you prefer single or twin tailpipe?
 

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?

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

you like it, thread closed. C=

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

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.

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... :icon_tup:

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.

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

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

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

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

Rightttt.

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

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

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

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.

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.

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

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

Rightttt.

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

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.

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.

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....

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

I love my Racing Beat REV TII!

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

lol.. 'weight savings' No appreciable difference.

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

Nothing was said about "Which flows better." To say that switching to a dual exhaust isn't going to quiet the system down, or is only go to "marginally" quiet it down is not true. The split in the system, the extra piping and extra muffler are going to absorb a good deal of the sound.

If he has a single and is currently so loud that he has to drop noise levels at the track, adding an obstruction of some sorts is basically the only way to do that, and my opinion is dual is better.

A single exhaust is like having different wheels on one side. It throws off the visual balance of the car and makes something just not look right.

wow, can it be, my first post in the FC section? after clocking over 250,000 miles on my T2 i guess i will give myself permission.

of course there's aethetics... and as i like to day, we can't all be divorced from the same woman.

so putting that aside, there's weight and flow. the duals are heavy. i had a RB dual setup and the mufflers are filled w stainless steel shaving to combat the higher rotary EGTs and the setup is heavy. probably not a major issue. while on the dual subject i would like to put in a good word for the quality of the RB dual system.

then there's the more important factor, flow. it is probably more complicated than just looking at the total area of the i d of the pipes. mufflers enter in etc and i am not currently well versed in the details.

i do think that if you have at minimum a 3 inch i d on your total exhaust system you are generally fine. i run a 3 inch exhaust on my FD and made 514 sae last month and the engine was very happy at 8600.

i can see it either way.

i still miss a number of aspects of my T2:)

howard

howard c is really slumming it now posting in the 2nd gen section, lol

Single baby!!!

duals ftw

Big ol duals!!

I wanna go back to duals

Single here and love it, duals look good also, but i dont have a N1 style muffler so it looks decent. I mostly like the single because of the ease to drop it, 2 flange bolts and a hanger bolt and the whole system is dropped on mine. Less gaskets, less exhaust leaks.

[quote=jerd_hambone;10986448]Nothing was said about "Which flows better." To say that switching to a dual exhaust isn't going to quiet the system down, or is only go to "marginally" quiet it down is not true. The split in the system, the extra piping and extra muffler are going to absorb a good deal of the sound.

If he has a single and is currently so loud that he has to drop noise levels at the track, adding an obstruction of some sorts is basically the only way to do that, and my opinion is dual is better.

A single exhaust is like having different wheels on one side. It throws off the visual balance of the car and makes something just not look right.[/quote]


That.:icon_tup: And that.:icon_tup:

Single looks cool.

had duals on 3 of my fcs

all i can say is that duals are HEAVY!

go with single they might be slightly louder but you can noticeably tell the difference in weight.

duals are for ppl who are OCD and vain enough feel like they need symmetry...

be a man, be logical, be single

It is a little more than one muffler and half a Y pipe of weight difference. This could only be considered heavy if: you are a 7 year old girl, your car has 100hp, or you are a racing professionally (which many people on this forum seem to think they are doing or will be doing).

Like this guys car (Sorry, I forgot your name), would not look nearly as good with single.
http://i182.photobucket.com/albums/x...atus/DUAL7.jpg

bingo!

My RevII is indeed very heavy, But I'd definitely regret sacrificing the sound for a lighter exhaust.
And if you're running canister n1 style mufflers, dual or single, its gonna be loud regardless.

On another note... It took ~40 posts till somebody posted a photo? How did that happen?