the whistling sounds is due to the x-pipe. the sounds is probably magnified because of your test pipes.

That's what I'm thinking. There have been post about this before hinting that.

^^What is happening is ARK designed the Exhaust with Stock Cats, The Increased Exhaust flow due to the test pipes is to much for the X pipe section thus creating a loud howl wistling noise. Which is the reason I sold mine soon after purchase, Because I was not going to take off the Test Pipes.

Note the exhaust will sound just fine with the stock cats, only when use of Test Pipes will it make this loud howl,wistle noise.


DAN

^^^hmm. i wonder if the case is the same with HFC's. although not as bad...maybe?

yep.

So it's been a few months, any of you guys having problems with scraping? I'm sold on the sound of this system, but am definitely worried about scraping every time I pull in my driveway, etc.

The position of the lowest point of the exhaust is where the wheel is. This means that your fenders and tires would meet before the exhaust touches the ground.

On KW v3's with ARK exhaust. Surprisingly, its very rare that I scrape.

Its all due to the position of mufflers.

Nice exhaust, how much did you get it for ?? (shipped)

Give them a call and see if they have anything going on. I got free installation when I went to go pick it up. Make sure you pick up with stock exhaust though

Anyone have a resonated TP or resonated HFC with the ARK exhaust? If so how's the whistle/hiss?

Just wanted to bump this thread and let everyone know that ARK is in the process of fabricating their own HFC to fix the whistle/hissing noise that you get from the exhaust when paired with test pipes. Not sure on the ETA but it's in the works.

I'm no engineer but I'm assuming the pipe will have to be somewhat more restrictive to eliminate the hiss since it's present with HFC and TP, but not with stock cats. I could be totally wrong and it may be a design issue. Either way I hope it comes out soon because I love everything about the ARK GRIP other than that hissing noise. If it doesn't come out or doesnt fix the hissing I can always go back to stock cats, but I really dont want to lose the performance from a TP or HFC.

Yes we are

Yeah im running the Berk HFC and I noticed the hiss sound... I would love to see if there was a fix with some new Ark HFC.. Id love to be a tester! :tup: