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      05-29-2012, 12:34 PM   #45
Malek@MRF
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H-pipes are generally used to balance frequencies, not for power gains. They are only marginally better at controlling the rasp in the exhaust system. A true X merge collector is the most efficient and power producing method, especially compared to the H.

The Akra does not have the highest power producing Mid-section on the market. There are far more powerful systems out there. Akra has the H to eliminate the rasp.
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      05-29-2012, 01:30 PM   #46
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Quote:
Originally Posted by Malekreza11 View Post
H-pipes are generally used to balance frequencies, not for power gains. They are only marginally better at controlling the rasp in the exhaust system. A true X merge collector is the most efficient and power producing method, especially compared to the H.

The Akra does not have the highest power producing Mid-section on the market. There are far more powerful systems out there. Akra has the H to eliminate the rasp.




Thats exactly what it did on my RPI exhaust, eliminated the rasp
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      01-20-2013, 12:44 PM   #47
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Do anyone have a sound clip of an H-Pipe installed?

Coming from 2 mustangs, X-pipes are generally known for creating more of a raspy exhaust, where H-Pipes produce more of a deep throatier tone.

As mentioned before, couldn't you order a H-Pipe and swap out the stock X-Pipe?
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      01-20-2013, 01:37 PM   #48
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interesting... ill be adding an H to my challenge sport and GT2 muffler this summer
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      01-20-2013, 03:53 PM   #49
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Not being an exhaust engineer, I have to think the importance of placement both relative to the headers and to each other would drastically effect the performance of an H pipe and X pipe both used alone but even more so in conjunction with each other.

I mean used too close together could produce a equalization of pressure at a point where the x pipe is relying on higher pressure on one side to scavenge or somethiing (just example with no real merit but just illustrate point)
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      01-20-2013, 05:19 PM   #50
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Would love to hear a sound clip
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      01-23-2013, 01:07 PM   #51
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bit too much rasp

I just done the OEM mod with a custom xpipe, removed 2nd cat/resonator and replaced with solid pipe. And used the original x section. Almost added the h-pipe like the Akrapovic one. But happy at the moment with the sound.

Would like it to be a bit more bassy/boom (but not OTT). Wonder if the H pipe would lower the rasp a tiny bit.


Last edited by sylonien; 01-26-2013 at 07:45 PM. Reason: added video
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