Screaming whistle
Elder User
Joined: Jan 2007
Posts: 807
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From: Houston, TX
Originally Posted by Green_Monster
I know I am a minority here but the wrapped down pipe ( stock) is nice for me cause in cab whistle is down to a minimum, I do know the aftmrkt dp is the best way to go in general but my setup works for me. In nicer weather I may go for it, but right now I am up 2 mpg and can't complain at all. how many mpgs will the aftrmrkt downpipe add......probably not a sig diff on my stock rig but that is my opinion.
I was worried about the in-cab whistle noise at first, but it's really only noticeable as it spools up. Once you reach your target MPH, such as cruising down the road, the boost drops off and the whistle drops significantly.
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New User
Joined: Jul 2007
Posts: 9
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Originally Posted by Green_Monster
TX is right on that point 100% Its only loud when you spool it up and get it pushing air.
If I am correct in my thinking, putting the cat back on will quite it down the most but putting a mbrp muffler will give it a smooth tolerable pitch.
Senior User
Joined: Aug 2007
Posts: 469
Likes: 1
From: lake park, MN
either that or put the factory dp back on. The factory dp in our 03 and sometimes 04s had a small resonator that was ment strictly for the turbo wistle built into the pipe. It will silence the turbo alot but you can still hear it alittle.
Elder User
Joined: Jan 2007
Posts: 807
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From: Houston, TX
My Banks downpipe has a small resonator on it, but I don't think it does much. Considering how much trouble it was to get the stock dp off and 3x the trouble to get the new dp in, I don't think I'd do it again. I may be way off, but I'd guess the aftermarket dp doesn't do much for you in the grand scheme of things.
Just my .02
TX
Just my .02
TX
Elder User
Joined: Jan 2007
Posts: 807
Likes: 0
From: Houston, TX
Originally Posted by dieseldust2
The stock downpipe on a '03 and early '04 has a resonator in it to tone down the turbo. Banks makes one with a resontor to fix the whine.
TX
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It whistles pretty loud, but not as loud as the 03's. I want an 03 turbo just for that reason.
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