# Anyone have dyno results of no crossover vs x/h-pipe?

**URL:** <https://forums.speedlife.net/t/anyone-have-dyno-results-of-no-crossover-vs-x-h-pipe/192783>\
**Category:** PittSpeed Automotive\
**Created:** [October 3, 2007, 10:05am UTC](https://forums.speedlife.net/t/anyone-have-dyno-results-of-no-crossover-vs-x-h-pipe/192783 "2007-10-03T10:05:45Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![T34418L31](https://avatars.discourse-cdn.com/v4/letter/t/e56c9b/32.png) [@T34418L31](https://forums.speedlife.net/u/T34418L31)\
**Post date:** [October 3, 2007, 4:07pm UTC](https://forums.speedlife.net/t/anyone-have-dyno-results-of-no-crossover-vs-x-h-pipe/192783/7 "2007-10-03T16:07:06Z")

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> [@My New Toy](https://forums.speedlife.net/t/my-new-toy/32808/30):
>
> I would be curious to see a dyno comparison on the same car with straight vs X vs H pipes.
> 
> My main reason for wanting to get one is the change in sound. Not necessarily to make it quieter, but get rid of the poping/ticking sound…

Exactly! No one ever answers past “you should have one.” Not pointing fingers at anyone, I’m just saying. That’s something else I got, was the exhaust note. However, I don’t think my car sounds bad at all. It has the loud pop/rasp downrevving, but I think it sounds great.

I said f-it, though. I’m building straight pipes. They’re done, actually, but I ran out of paint and don’t have a vehicle to go get more right now 💤

5-7dB is a decent bit for a free-flowing muffler. The bullet/straight-thru mufflers don’t do much, and the big (read: I can’t fit them) mufflers quiet it down and make less power.

I’ll tell ya what. Going from essentially 2.5" open headers, to a 1’ long piece (a 90\* off of the header) changed the tone a lot. I’m guessing just the extra volume is going to quiet it down a good bit compared to what it was. I’ll grab some video whenever I fire it.

I was going to do side pipes, but after looking at it again and again and again, it’s not worth it. I have to relocate my fuel filter, and everything is such a tight fit, that it’s not worth the hassle.

So, dumps with the OEM muffler hanging in the rear FTW.

EDIT: I’m aware of what the crossovers do, I’m looking to see if there’s proof of significant power loss/gain.

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