exhaust
Post Fiend
Joined: Aug 2002
Posts: 5,324
Likes: 1
From: Denton,TX
Originally Posted by Skipped_link
I thought that the problem was over spinning the turbo, neither a wastgate or a popoff valve wound slow the turbo down would it?
Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
or overspins trying to provide the MAP for the power you are demanding. If you have an oversize exhaust and not enough back pressure, the variable vanes will not open all the way causing an overspeed effect. Overspeed and overtemp and you have straightened out turbine blades.
Hotshot
Joined: Dec 2003
Posts: 15,369
Likes: 121
From: Stuttgart, Ar
Has anyone had the downpipe out of an 04 and compared it to an aftermarket? I was reading some posts about it being less restrictive and wondered if Ford had redesigned it sufficiently large to accomodate the 100hp program for non-towing use? Anyone "pyroed" it to know?
Posting Guru
Joined: May 2004
Posts: 1,414
Likes: 0
From: stoneboro, pa
Originally Posted by johnsdiesel
Yes it would. Both are designed to release pressure when it gets to a specific point. Less pressure = turbo spins slower
besides, the only way ur gonna make more power is w/ more boost, and why would u want to bleed that off??????? ur not gonna over spin it. it will stop boosting before u are even close. (efficiency of the turbo will drop, dramatically)
the only machines that need to be concerned w overspooling are extreme performance like super-farm and pro and super-stock pulling tractors.
u guys got a loooooonnnng way to go before u get to that level. i think its kinda cocky of all of u to even think u have enough juice to overspool a tuba.....
Junior User
Joined: Jan 2004
Posts: 68
Likes: 0
From: Fort Mill, SC
I just had turbo back exhaust installed today. It was goning to be the first of mods but after driving it not sure I need programmer, performance was unbelivable. The system was from Diesel Performance Products. Talked with tech before install, asked about over spooling turbo. He said that was number one question for 6.0, also said he has install over 100 exhausts since they became available, with not problems. Plus manufacture would back up product and any parts of engine should there be a problem. So I guess I didn 't answer question about what is best, but sure do like sound and performance of my exhaust. Just kidding about programmer just not sure which one I want .
Last edited by Sonic Blues; Jul 20, 2004 at 07:29 PM. Reason: missing word
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southbound35west
6.0L Power Stroke Diesel
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Mar 31, 2007 12:41 PM
