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Author Topic:   Anyone with a supercharged 5.4

Posts: 400
From: Sumner, WA
Registered: Dec 2001

posted 12-13-2003 01:31 PM     Click Here to See the Profile for Kyle   Click Here to Email Kyle     Edit/Delete Message   Reply w/Quote
I have a friend who has a Harley truck. He put a K&N filter, Diablo sport chip, and a lower blower pulley onto it, along with Bassani headers, cat-back, and mufflers. I was doing some reading about boost bypass valves and was wondering if he should consider installing one. Anyone with some expierence or knowledge about these? Thanks!

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Posts: 3984
From: Biddeford,Me.USA
Registered: May 99

posted 12-14-2003 08:11 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
I think you use those if the boost goes over a certain psi. that way,you won't be blowing out intake and head gaskets. I would do some research,since he changed a blower pulley,possibly raising the pressure.

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Posts: 1463
From: Kent Island, MD USA
Registered: Sep 2002

posted 12-16-2003 07:37 AM     Click Here to See the Profile for BlueMule   Click Here to Email BlueMule     Edit/Delete Message   Reply w/Quote
The chip is enough. The boost bypass will only prevent 'boost-dump' after an over rev if the trasmission is shifted manually. Where the chip keeps all plugs firing during shifts. (That's if the Harley is rigged to shut down 2 cylinders during the 1-2 shift like the Lightning.)


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00 SVT f150 Lightning 4149 of 4966 Born on: 06/26/2000

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