Please toyota/subaru.... everything is perfect, but...

[WingsofWar]

Originally Posted by bofa

Yep I realize that... But I have to admit I was thinking of turbo 4 when talking about the 3" pipe (oops). I agree that N/A, 2.5 is probably pushing it. Maybe they will make a turbo version just so we can have true duals (insert I heard there's gonna be a turbo version thread here)

true duals on Single turbo would be pointless, you would have a single turbo back exhaust..splitting it into 2 separate pipes after the downpipe is non-sense.

A twin non-sequential turbo option like found in the Legacy GT-B and B4 with EJ20R/EJ206/EJ208 might benefit from a true dual setup. But i would not go any larger than a 2.0 pipe per each turbo, but i haven't had the luxury of working on one of those engines yet.

[bofa]

Guess I have a lot to learn coming down from the V6 world...

At least things should be a little cheaper...

[Dimman]

Originally Posted by WingsofWar

The Output volume doesn't depend on exhaust pipe..its the total exhaust volume that the engine puts out. Typically smaller engines don't give big exhaust pulses. Biggest you should ever go on a small engine, small displacement, N/A is a 2.5 in pipe...you can push 2.75 but your risking performance. A 3 inch exhaust will rape your low end torque band and ultimately rob you of power.

This depends on how fancy you want to get with your header/exhaust design. The general max size of your piping is based on your power requirements. But if that diameter doesn't jive with your primary/secondary tube tuning for scavenging, you can build a pressure-wave termination box, so the final exhaust diameter doesn't affect the pulse scavenging.

This would be on a full-race setup though.

As for the single/dual, for me it will probably be single as I anticipate using a 4-1 merge collector or a 4-2-1 with super short secondary merge collector for my header design.

[SUB-FT86]

Normally I love dual exhausts but on a 2.0 liter car it's a waste of time. I'd rather see them on a high output V6/I6/F6/V8/V10/V12.

[TRDChamp]

Always liked the look of the Dual exhausts more.

[Levi]

I prefere true dual exhausts from header. The engine is semetric, 2 cylinders on one side and 2 on the other, so one exhaust tipp on each side. Weight saving will be made thanks to titanium.

[ichitaka05]

Originally Posted by Levi

I prefere true dual exhausts from header. The engine is semetric, 2 cylinders on one side and 2 on the other, so one exhaust tipp on each side. Weight saving will be made thanks to titanium.

& how much that gonna cost? Also 4>2>1 to single exhaust titanium vs (2>1)x2 true dual exhaust titanium, which gonna weight less?

[Kage]

But levi even though there are two cylinders on each exhaust pulses aren't going to be even. The firing order would have to be either (FL,RL,FR,RR) or (FL,RR,FR,RL) or the mirror of those which always would result in both left cylinders firing after each other then both right cylinders. Now I could be wrong but wouldn't such an uneven exhaust pulse suck for scavenging and hurt performance.

Originally Posted by TRDChamp

Always liked the look of the Dual exhausts more.

What's up, I see more people are making it over from new newcelica.org
And yeah, I definitely prefer the look of dual exits too. But they can become much more expensive compared to single exhausts.

[ichitaka05]

Originally Posted by Kage

^What's up, I see more people are making it over new newcelica.org

prob cuz of that Celica news they had lil while ago

[70NYD]

Dual pipes from headers is overkill for this.. Like I said in countless threads before, a dual exit muffler with tips on either end of the car is what I want (what they have right now on the mule/camo)

[iff2mastamatt]

Originally Posted by 70NYD

Dual pipes from headers is overkill for this.. Like I said in countless threads before, a dual exit muffler with tips on either end of the car is what I want (what they have right now on the mule/camo)

Almost everyone wants this anyways, so I wouldn't worry about it changing.

[70NYD]

Sweet

[ryun84]

And those who prefer single exits shouldn't worry too much as the aftermarket sector will most surely provide single exhausts.

[EJ20]

Sorry for being late, I was so busy. But regarding the tail lights, ummm they look fine with me, specially for the 216A.
I know to each his own idea on how he want this car to be, but lets hope it will satisfy all of us

Originally Posted by ryun84

And those who prefer single exits shouldn't worry too much as the aftermarket sector will most surely provide single exhausts.

+1
If some tuner make a good single exhaust, I'm going for it Its a japanese car, its no euro/american muscle where it will need dual/quad exhaust (Thats one of many resones why I love the GD impreza over the current ones)