ones gonna give you 6 whp and the other is gonna give you 2whp....wow....thats crazy. lol
If you can feel that then your nick name should be Gtech!

Its all looks...

 

Other than weight, I can't see how it could make much difference especially if your using 70mm pipe.
The extra muffler would probably have more to do with restriction than a single straight pipe verus one split into two.
I say go for the look you prefer rather than any pre concieved notion that one may be better than the other.

 

Wrong. Any time you split the exhaust flow that will not be as smooth as straight out and will cause turbulance resulting in a restriction. Going single 70mm will always net more power than a dual 70mm. Same for smaller or larger size piping on all 4 cylinder cars.
Saying single makes more power is not a myth or just BS. Single will make more power than a dual no matter what. I don't see why that is so hard for people to understand on here.

 

i agree that single provide the best performance. Both exhaust flow and the weight saving. On cars like the S2000, any weight you shave off will improve on the performance of the car. Look at the Lotus. It doesn't make crazy power but its light.

It all depends on the person whether he/she is all show and no go, all go and no show, or both show and go. HAHA. Yes a single doesn't look as good as a dual because of the bumper but its all relative to the person

 

another thing is, yes its only a few hp, the s2k is already highly tuned from factory. When I slap an exhaust on the supra, its making 40-50 HP. But thats turbo. Any HP you can get is good whether its 5 or if its 50. Like I say, its all relative.

 

Hmm... I'll bet your going with a single.

 

I went with a dual exhaust actually. I did not want to attract more attention so Spugen dual looks almost stock and makes a little power over stock. Not as much as a single but still been dyno proven to make a little.

 

What about the new Berk UHV exhaust? They claim it flows as well as an 80mm single but with higher velocity. Any input?

 

you are looking at two different "term"(velocity vs volume)

"velocity" in ghetto term the rate of speed the liquid/air moves. for example when you hook up your garden hose to sprayer nozzle(with smaller outlet), the water is shooting out at higher speed vs just letting the water hose runs without any attachement. But do notice the increase of velocity was based on the restriction it has and that will decrease the over all volume of the output.

to build a NA good exhaust is not only about volume it can move nor the speed it can move thing, because making power or not depends on the power band of the motor. simply put it has to mate with the purpose the exhaust intended as well as the power attributes of the power band.

if bigger is better why don't we all see people running 5 inch exhaust on stock s2k? maybe because you will lose torque/low end/scavenging ability? SCC took out a pre-production 350z to JIC back in 02-03 and JIC built some sick arse exhaust for them, it looks awesome, the flow bench confirmed increase flow number and when they put it on the car and ran dyno back to back, it doesn't make anything on the roller.