Aftermarket exhaust question?

[archangl]

I know this is a stupid question, but curious just the same. Just wondering why I never really see Mustang's with a single exhaust setup, like Supra's or JDM cars (this is my background, thus a norm for me). Has anybody done this and I just haven't seen it, or is it some unwritten rule not to do this. Just curious.

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[waltrs]

I can venture to say that it is due to the vehicles coming with dual exhausts as OEM. And the rear bumpers have 2 cutouts for the dual exhaust. So the demand probably isnt high, and manufacturers arent gonna make stuff that they dont think will sell.

Honestly I would love to see it on an ecoboost. Im a jdm fanboy myself. There is a lot of older people on this forum, a lot of purists, and a lot of track junkies.

I do not know how it would work on a GT like you have, but if you have an idea.. get with an exhaust shop and send it!

 

[Konamoth]

I can venture to say that it is due to the vehicles coming with dual exhausts as OEM. And the rear bumpers have 2 cutouts for the dual exhaust. So the demand probably isnt high, and manufacturers arent gonna make stuff that they dont think will sell.

Honestly I would love to see it on an ecoboost. Im a jdm fanboy myself. There is a lot of older people on this forum, a lot of purists, and a lot of track junkies.

I do not know how it would work on a GT like you have, but if you have an idea.. get with an exhaust shop and send it!

I have actually seen one (1) single exit system for EB's. See here.

Likewise, not sure how or if it would work on a GT. Almost seems like it'd choke the exhaust more than anything.

 

[waltrs]

I have actually seen one (1) single exit system for EB's. See here.

Likewise, not sure how or if it would work on a GT. Almost seems like it'd choke the exhaust more than anything.

It for sure would. There is a reason Ford put duals on from the factory. I still love seeing people do unique stuff to the s550 platform, and would love to see a super jdm-esque build.

 

[hunter7389]

There was an S550 at the local car show last week that had a single tip sticking out at an angle like 2ft, but i didnt want to get close enough to look. Let rice, rice.

 

[Mach VII]

Ecoboost has Tomei - https://www.tomeiusa.com/_2003web-catalogue/000_expreme/expreme_ti_mustang.html

 

[MidwayJ]

Dual exhausts are appropriate for V8 or V6 engines because you have an exhaust manifold on each side. Single exhausts are better for inline engines, although some have dual exhaust for cosmetic reasons.

 

[Angrey]

It just wouldn't make much sense. In order to get a comparable flow rate of both banks of cylinders, you'd need a slightly larger pipe. A general rule of thumb in liquid flow is that a 33% increase in pipe diameter roughly equates to a double of the flow (at same pressure).

So roughly, in order to flow the same CFM of exhaust that you get with dual 3" pipes, you'll need roughly a 4" pipe.

You typically see this in trucks where there's adequate space underneath for pipe routing and you gain the efficiency of a single muffler/resonator (larger).

In order to keep the single muffler/resonator efficiency, some manufacturers route the duals into a single assembly (like Ford does with the suitcase or GM has done in the past with the corvette exhaust.

The reason you see this approach from the JDM crowd is typically the factory exhaust systems are single (unified) so the provisions underneath the car and at the rear are setup for a single pipe (meaning running duals of equal length could prove challenging with stuff in the way or having to cut new exhaust exits).

There's many ways to a high flowing exhaust setup, but the reason you don't see a big single on most V-8 cars is that it's setup that way from the factory and limited space for single 4" piping and frankly, it's a cultural thing where dual is considered preferable.

 

[Jaymar]

Even if you achieved the same theoretical flow from a single, you'd have to consider the exhaust pulse collisions causing reversions as well so it still wouldn't flow the same. And, you'd have a big, silly looking 4" pipe hanging out of the rear end with one of two exhaust cutouts not filled.

 

[SEAICE]

As an old guy who grew up with American muscle cars in the 60s and 70s, single exhaust is simply "not cool", and NO ONE wanted single exhaust if it could be avoided. Its also simply symmetrical. Appears that this is the case again today, as even a base model Mazda 3 has "dual" (at least in appearance) exhaust.

 

[daSNAK3]

Yea, not a fan of single exhaust... even on my WRX I had dual exhaust and would not change it.

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