Exhaust whistle from turbo when you back off on the accelerator

Submitted: Tuesday, Jan 18, 2011 at 13:58
ThreadID: 83723 Views:4603 Replies:6 FollowUps:8
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I am going to be putting a 3 inch exhaust system on my D22 and i want the whistle noise when i take my foot off the accelerator like Graham Cahill's GQ shorty on the 4wd action dvds. How do i do that? does it have to be complete straight through or have a cat or what?
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Reply By: - mazcan - Tuesday, Jan 18, 2011 at 14:03

Tuesday, Jan 18, 2011 at 14:03
hi
are you sure you haven't run over an umpire in your travels and he wants to give you a kick lol
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Reply By: Ruffy-Dan - Tuesday, Jan 18, 2011 at 14:26

Tuesday, Jan 18, 2011 at 14:26
Without turning this into a tech thread about turbo lag, back pressure drops, loss of performance, legalities and economy etc i'll simply say 'Yes" straight through exhaust will give you that noise.
Good luck!!

Dan
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Follow Up By: Navara09 - Tuesday, Jan 18, 2011 at 14:27

Tuesday, Jan 18, 2011 at 14:27
Will it do it if it has a cat?
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Follow Up By: GoneTroppo Member (FNQ) - Tuesday, Jan 18, 2011 at 15:13

Tuesday, Jan 18, 2011 at 15:13
I know how to make a cat bark, making it whistle is another level of sophistication altogether.
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Follow Up By: Kimba10 - Tuesday, Jan 18, 2011 at 21:54

Tuesday, Jan 18, 2011 at 21:54
Gonetroppo, LOLOLOL
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Reply By: Muntoo - Tuesday, Jan 18, 2011 at 16:31

Tuesday, Jan 18, 2011 at 16:31
Yeah good hi flow muffler with 3'' dump pipe. You will need a good quality cat also. Many 3 litre Patrols with 3'' exhausts sound good, with alot of whistle, but it can get very annoying after a couple of hours at highway speeds.
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Reply By: Member - Graham H (QLD) - Tuesday, Jan 18, 2011 at 17:40

Tuesday, Jan 18, 2011 at 17:40
Well my straight thru Mandrel exhaust doesnt sing, whistle, bark or play tunes.

Maybe Im going faster than the sound LOL

Perhaps a 3" may be a bit big for a D22 a 2 1/2 or 2 3/4 may be better.

Too big can be worse than too small.

Quietness is next to godliness when doing several hundred k's a day

May be I'm just getting to old ROFL


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Reply By: get outmore - Tuesday, Jan 18, 2011 at 17:56

Tuesday, Jan 18, 2011 at 17:56
sounds fully sik bro
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Follow Up By: Kimba10 - Tuesday, Jan 18, 2011 at 22:06

Tuesday, Jan 18, 2011 at 22:06
LOL, maybe needs a blow off valve as well, http://www.youtube.com/watch?v=r1h7wA3PBeU&feature=related not sure you would hear it over the diesel clatter...............
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Reply By: Kimba10 - Tuesday, Jan 18, 2011 at 22:09

Tuesday, Jan 18, 2011 at 22:09
Not having a go at you Navara09, I know the exact sound your talking about as I have noticed it on a few patrols as well and also the video you are referring to watched it myself, have actually noticed it on some trucks to while there going through their gear changes, my mate did it to his paper truck, sounds good while going through the gears but drove me mad while shooting down the freeway at 110k. Regards Steve M
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Follow Up By: Kimba10 - Tuesday, Jan 18, 2011 at 22:16

Tuesday, Jan 18, 2011 at 22:16
Sorry forgot to add if you listen to a 1kz (prado,hilux) and switch the aircon on (idle up) they have just a slight whistle coming from the exhaust, they all do it, people often ask me whats that whistle from the xhaust
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Follow Up By: Dave(NSW) - Tuesday, Jan 18, 2011 at 23:34

Tuesday, Jan 18, 2011 at 23:34
Paper truck shooting down the freeway at 110k ROFLMAO.
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Follow Up By: Kimba10 - Wednesday, Jan 19, 2011 at 07:12

Wednesday, Jan 19, 2011 at 07:12
Hi Dave, you obviously now how paper truck drivers go about their business ?? Regards steve
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Follow Up By: Dave(NSW) - Wednesday, Jan 19, 2011 at 09:28

Wednesday, Jan 19, 2011 at 09:28
Hi Steve,
Yeah the old Dodge V8s would hve been in MPH LOL.
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