True Dual Midpipe?
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Joined: Jul 2011
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From: TX
True Dual Midpipe?
So I was wondering.
I've got the F Sport exhaust and I love it. PPE Headers on the way too (they are being manufactured right now).
But I really want to go true dual. I've only been able to find the Joe Z exhaust that runs the dual.
I was wondering if anyone out there knew of a dual midpipe that would hook onto the F Sport exhaust bypassing the Y tube and going straight to the muffler section. I think that this would be a pretty hot item for all of us F'ers
any thoughts?
Maby Joe can make some for us!
I've got the F Sport exhaust and I love it. PPE Headers on the way too (they are being manufactured right now).
But I really want to go true dual. I've only been able to find the Joe Z exhaust that runs the dual.
I was wondering if anyone out there knew of a dual midpipe that would hook onto the F Sport exhaust bypassing the Y tube and going straight to the muffler section. I think that this would be a pretty hot item for all of us F'ers
any thoughts?
Maby Joe can make some for us!
Save yourself some $$ and just find yourself a good exhaust shop. They'll make up whatever you want. You can pre-purchase the resonators you want and everything too if you don't wanna use their stuff.
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Joined: Jul 2011
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From: TX
Any idea on the pricing on something like this? Sounds like it may be pretty expensive.
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Joined: Feb 2009
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From: CA
can i ask why you would want a true dual? A lot of people add an X-pipe/H-pipe to even out the flow anyway with these. Do you want a true dual for the sake of saying you have one?
On borla's system, looks like you have to do some cutting and their exhaust is sleeved over the oem midpipe
On borla's system, looks like you have to do some cutting and their exhaust is sleeved over the oem midpipe
Bear in mind the difference between just an axle-back and a full, complete, illegal, dual all the way, exhaust is about 3 horsepower.
If you're doing it for looks or sound, groovy... but if you're doing it for performance it's pretty terrible bang for the buck versus just doing an axle-back.
If you're doing it for looks or sound, groovy... but if you're doing it for performance it's pretty terrible bang for the buck versus just doing an axle-back.
Thread Starter
Pole Position
Joined: Jul 2011
Posts: 373
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From: TX
Bear in mind the difference between just an axle-back and a full, complete, illegal, dual all the way, exhaust is about 3 horsepower.
If you're doing it for looks or sound, groovy... but if you're doing it for performance it's pretty terrible bang for the buck versus just doing an axle-back.
If you're doing it for looks or sound, groovy... but if you're doing it for performance it's pretty terrible bang for the buck versus just doing an axle-back.
Thanks Kurtz
Full disclosure- that ~3 hp difference is what has been found repeatedly on stock-manifold cars.
I don't know that anyone has properly tested the gain difference between an axle-back and a full dual exhaust on a car with PPE headers. It's certainly possible the difference becomes larger than 3 (or it might not, I don't think anyone knows for sure)
Though I highly doubt it'd go up enough to justify an extra 1k in cost.
I don't know that anyone has properly tested the gain difference between an axle-back and a full dual exhaust on a car with PPE headers. It's certainly possible the difference becomes larger than 3 (or it might not, I don't think anyone knows for sure)
Though I highly doubt it'd go up enough to justify an extra 1k in cost.
Kurtz makes a lot of valuable points about this subject. I've installed a set of headers on an IS350 w/borla duals and we a dyno absolutely no gains. My scan tool also logged the same amount of air flow across the MAF meter with the stock manifolds and the headers.
Having looked at these engine apart in my hands I think that gains are possible. The abnormal shaped plastic intake manifold will need to be replaced with a better design and perhaps switching the throttle body to a lexus V8 throttle body.
Having looked at these engine apart in my hands I think that gains are possible. The abnormal shaped plastic intake manifold will need to be replaced with a better design and perhaps switching the throttle body to a lexus V8 throttle body.
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