I just wanna know if it'd mess up to dump the exaust before the cat for
short periods.. (track)
I'm lookin into an exhaust dump after seein that it droped a 5.9 .6 secs...
=)
__________________________________________________________
Tim Berry -- Chesapeake, VA
`97 SLT 318 auto CC 2x4 LSD:
Dual Exaust w/Flowmaster, Homemade K&N GEN II, 16" Electric Fan
180 T-stat, MSD 8.5 wires, Lakewood Traction Bars, F&B Stage 1 TB. Mod'd
intake
ASP Pullies (Crank/Alt), Trans Go Shift Kit, BFG 275/60's, Hypertech PTM
(gettin fixed)
BEST 1/4 15.488 @ 86.23 MPH
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----- Original Message -----
From: "Patrick Delgado" <dadoctah@vitelcom.net>
To: <dakota-truck@buffnet.net>
Sent: Thursday, March 16, 2000 6:52 PM
Subject: Re: DML: Re: Cut out Cat
> The upstream O2 sensor(nearest to engine) is the one that's used for
fuel/air
> calculations. This is upstream of the cat and it's output wouldn't be
> affected. The other sensors are attached downstream and/or on the cat
itself.
> These O2 sensors are the ones that are used to test catalytic converter
> efficiency. Under short trip and stop-and-go conditions the PCM will never
> test for cat efficiency. Very strict parameters must be met before a test
is
> performed. And even then you must fail 3 consecutive times before you get
a
> light. I can't remember the specifics, but I remember when it was first
> posted, I realized that on a 27 mi. long island I'd NEVER get the "light".
> Did anybody save that post? I did but somehow lost it.
> Dr. Pat
>
> Tim Berry wrote:
>
> > How bad would it screw up the puter tho?
> > Wouldent the o2 sensors be like... WTF?? =/
> >
> > Any suggestions ect...
> > I may have to do this... =-)
>
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