Originally posted by ODC:
Does true duals give a 5 - 10 hp boost over a trubendz setup ?


That's the million dollar question.

Just by design and efficiency it's a given it makes more power but the amount more is not a set number.

A stock car may see just a pittance of benefit. A highly modified car may see a ton.

On my 2.5L I felt a noticeable difference going from an extremely good Y-pipe setup to straight duals. (no balance pipe even)
No dyno numbers but over 1 mph in trap speed under worse conditions.
I felt a nice mid range boost when I added the balance pipe and sound quality was improved greatly. I'm sure I gained across the board but the butt dyno could only feel the 4000-6000rpm perk in torque.

My 3L runs the same setup and does well for itself.

So yes it's worth it...


Now the catch.

You'd have to build it yourself. I wouldn't trust a shop to do the job worth a damn.

That means a bunch of mandrel bends, some straight pipe sections, a chop saw, a die grinder, and a welder at bare minimum. 2 resonators, flex joints, and mufflers of course.

I ran my straight back. Added the 4 extra bends per pipe to go around the tank would definitely diminish some of the efficiency.

An exhaust is only as good as the build quality and junction points.
If they are not top notch then neither is the exhaust. 'nuff said.


That's also the reason I recommend the Tru-bendz to everyone.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.