Loud noise after installing downpipes

[Cervantes]

I've had a strange noise since I installed my aftermarket downpipes. It almost sounds like wind blowing through paper. I have checked for leaks, made sure the turbo was ok, and I have not found anything. Is this normal wastegate noise since there's more airflow?

[lord flashheart]

What muffler are you running? Catted or non catted?

[Cervantes]

no cats

[lord flashheart]

Muffler?

[Cervantes]

it's aftermarket downpipes, catless and an aftermarket muffler

[lord flashheart]

Well I figured it was aftermarket. But there are quality mufflers like flowmaster, and there is glass packs, like cherrybomb, and there are the shitty checker/eBay 'hi flow' mufflers. The quality ones mostly change tone and make the exhaust louder but the ebay and other rice boy cheapo mufflers sometimes don't muffle enough so u can hear the waste gate. Distinctly.
Although anytime u try to get the internet to dyagnos a sound is a crap shoot. Take it to a mechanic that listen to it, cuz taking any noise diagnosis from the internet is absolutely insane lol!

[Cervantes]

i looked it up and it seems to be a common thing after installing downpipes or uppipes. i had the muffler custom made an an exhaust place here in Okinawa.

[Wiscon_Mark]

You should go back to a cat if you want it to sound nice. Catless always adds a lot of harshness to an exhaust tone.

[Cervantes]

I'm not worried about noise as long as it doesn't effect performance.

[lord flashheart]

I dont think that.. in non turbo cars, yes, but the turbo quiets things down. I'll do a video with my exhaust which in my mind sounds perfect. Sounds like a rally car, but doesn't have the drone on the freeway, almost has a (I know this sounds dumb but) German tone to it.almost like a loud BMW exhaust on a rally car.

[Cervantes]

I don't thInk you understand what I meant. If the noise I'm talking about doesn't hurt the performance and it's because of the amount of airflow, I'm ok with it.

[Reuben]

Yeah, catless makes SFA difference in the turbo's I think, the turbo already does a lot to quiet things down. Anyway, my first thoughts for the problem are the downpipes not mating nicely to the turbo's, and there being an exhaust leak somewhere.

And a catless exhaust for you:
http://www.youtube.com/watch?v=dw0qAMilbvY

[Cervantes]

What would you recommend? I could get some high temp silicone and try to seal it that way?

[Reuben]

First try find out if that is actually the cause...

[Cervantes]

I've tried to refit it, swap out the turbo, gasket, and can't seem to figure it out.