overboosting (1987 5kcstq)

[Larry C Leung]

Actually, for just about no $$, you can jumper the fuel relay instead of
giving TAP lots of $$$$ to do the same thing for you.

LL - NY

On Fri, 30 Nov 2001 01:22:39 -0500 "TM" <t44tq at mindspring.com> writes:
>Yeah, you can get more boost until you hit the fuel cutoff
>at approx. 4400 rpms, which is a pretty violent and unpleasant
>cutoff. The fuel cuts off because the ECU senses a fault and shuts
>everything down in order to prevent damage to the engine. Now if
>you bypass these safeguards and force the fuel to remain on, you
>can experience this boost for an exhilarting time, until the
>engine goes BANG! and you destroy it.
>
>That's a really, really STUPID thing to do. If you want to experience
>this, just buy TAP's "chipset" for the 5ktq and pinch off the lower
>wastegate hose. I disclaim all responsbility for destroying your
>engine
>in this manner- you can do this at your own risk.
>
>The fuel system in the 5ktq is not capable of sustaining
>stoichiometric
>air/fuel ratio much beyond 15-16 psi, from the information available
>on
>the list archives. Due to the inability to supply sufficient fuel,
>boost
>beyond those levels will result in a lean condition which may do such
>nasty
>things as burn holes in your pistons, throw rods or other bad things.
>
>Taka
>
>-----Original Message-----
>From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]
>On
>Behalf Of Brian Devlin
>Sent: Friday, November 30, 2001 12:44 AM
>To: quattro at audifans.com
>Subject: Re: overboosting (1987 5kcstq)
>
>
>So....I can mess with one hose on my 86 5ktq and get more boost? And
>at
>lower RPMs? Why spend all that money on springs, chips , turbos and
>downpipes when I get put a calibrated leak into a hose? What key
>piece
>on information am I missing here? If you could recommend a book
>containing these pieces of information, that'd be great. The Bentley
>isn't exactly a textbook. -Brian
>