Header Wrap on Test Pipes

LostSol

So I really dont like my CNT test pipes, the poor build quality shows as they hiss worse than any test pipe ive ever heard and sound "tinny" far too often. Im gonna pick up another set from a better company and was thinking about wrapping them in header wrap to reduce unwanted noise and hiss further.

Has anyone ever wrapped resonated test pipes? What was your impression? How much header wrap did you need?

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Sh0velMan

Will affect the sound absolutely zero.

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LostSol

Really? Ive heard that wrapping a test pipe will virtually eliminate rasp if you have it, so i figured it wouldnt hurt. Oh well

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Chuck33079

A buddy of mine wrapped his HFCs and claims less hiss from it, but there's no real way to tell. If you've got the wrap already why not? It's not going to hurt anything other than the smell.

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LostSol

Well the hardest decision for me now is if I should try another resonated test pipe or should i just get the ARK HFCs

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Sh0velMan

From what I've read, the ART Pipes are about the only test pipe that doesn't have the rasp that everyone hates.

Mine has boat loads of rasp, but that's just one of the many noises it makes that you wouldn't want in your DD haha.

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AutoBallZ

I just installed motordyne art pipes on mine and there is still a rasp. sounds like an angry rattlesnake or a busted *** trumpet around the 3k rpm range

Maestro666

I have the Ark Grip exhaust and FI resonated test pipes. There is no rasp and the setup is quite loud. I added DC Sports headers and it got louder but still no rasp. A tiny bit of hiss can be heard outside the car when really getting on it, but it sounds bad-***.

I had some megan test pipes on there for a while and she got a bit raspy around 4k rpm

AutoBallZ

I can only hear the rasp INSIDE the car. On the outside it doesnt sound near as bad. The rasp has actually seemed to die down a bit. Its like I just hear the air being forced out.. more like a puffy hiss vrs a rasp now.

theDreamer

If you hate the pipes that much, a better choice is new pipes. And then after that look at wrapping them.

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LostSol

Well im def getting new pipes, either FI resonated test pipes, or ARK High Flow Cats (also resonated)

I have the ARK Grip V2 exhaust so im leaning towards spending the extra on the HFC's but i dont want to lose too much power.

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synolimit

Lol how would a pipe change the noise? A 2.5" straight piece of pipe isn't going to sound any different then anyone's else's. HOWEVER, test pipes that have Helmholtz resonators like the arts or an inline resonators will change things. I wouldn't sell them, I'd fix them.

I have long tube headers like shovelman and the rasp was horrible! I added some Helmholtz in the X pipe right where it bolts to the header, so basically they're installed close to where the arts would be in their test pipe. 90% of the rasp went away! I still have 18x4" inline resonators and the mufflers which are like 18x5" resonators. I don't think inlines do as much as Helmholtz's. I plan to remove the inlines and mufflers and see what it sounds like. Then I'll add Helmholtz to the rear like the motordyne CBE if I don't like it. If I still don't like it I'll add the 18x4" inlines back in.

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13 370z-

LostSol

I disagree, different material and thickness, combined with bend placement and weld quality, changes the way they sound.

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synolimit

They're all 304 SS 16 gauge. A weld isn't going to change anything. If it did FI would sound like **** being tack welded on the outside with the gaps in between.

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13 370z-

theDreamer

Are you sure of this?
I have heard many different TP with the same exhaust and you can tell a very good difference, especially the lower RPM range. Metal is metal, but some companies cheap out on certain parts and "claim" certain materials while also blending & mixing other things in.

I would agree that if 2-3 companies all made TP with the exact same supply of material it should sound the same but there are differences between TP.

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