[Supras] (no subject)

[jjcorbat at uwm.edu]

If your NJ emissions program is like Wisconsin, just keep your OEM exhaust on
for the test, pass it, and then go home and strip it off.  I have that routine
down to about an hour.  I keep the OEM exhaust up in the rafters of my garage
for those emission dates.

My daily driver exhaust is a hand-built 2.5" mandrel-bent downpipe & main
pipe(no cats) to a simple Dynomax muffler at the rear.  It's absolutely amazing
to feel the difference between stock and uncorked.

Quoting berniek at technicaldevelop.com:

> Wade:
>
> Yes, I did read your last mail, and will strongly consider a bigger
> turbo-back system, but NJ is a pain in the butt with exhaust emissions.  I
> wonder if a large downpipe and large single cat would do the job.  Anyone
> know?
>
> Thanks for the info on the MSD retarder.  I'll look into it.  But from
> what you say, it seems essentially unnecessary.  Does the ECU "learn" a
> new retard curve?  Different gas qualities found around the world would
> seem to indicate this.
>
> What type of Piggyback is most popular for taking out top end richness in
> the Lex-550 setup?  Any ideas for the most popular downpipe and big cat?
> I already have an 80 mm cat-back HKS systemI also have a 57 trim turbo.
>
> Any and all help and thoughts would be appreciated.  Thanks.
>
>      BernieK
>
> Wade Tobin Wrote:
> -------------------
> Message: 7
> Date: Tue, 11 Sep 2007 01:59:50 -0700 (PDT)
> From: Wade Tobin <wwt3198 at yahoo.com>
> Subject: Re: [Supras] Spark retard and top end fuel redux
> To: supras at supras.com
> Message-ID: <908299.23720.qm at web52502.mail.re2.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> That's some interesting reading but perhaps you're going into this a bit
> deeper than
> necessary.:)  There's dozens and dozens of 7m's running around w/ Lexus
> AFMs, 550s,
> piggybacks and no problems.  Been using a Lexus AFM/550s since 02 on the
> same engine
> which came from a junkyard (140k miles).  The car has made 420rwhp on the
> dyno 50
> passes on the track both 1/8 mile and 1/4 mile.  About 20 of those passes
> were over
> 17psi.  Best time was a 12.4 @ 117.
>
>   Don't know if you got my last email Bernie, but running the stock CT26
> elbow, DP
> and both cats is an area I'd far more concerned with than Lexus AFM tech.
> Surely,
> a choked up exhaust will cause higher EGTs and detonation, Lexus AFM or not.
> Also, a big intercooler is also a good idea.  The stock MK3 exhaust and
> intercooler = garbage.
>
>   Your absolutely correct about the ECU not retarding the timing w/ the
> Lexus.  MSD
> sells a boost timing retarder box for your needs.  I don't run one.
>
>   -wt
>
>
>
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