SpeedPro Tuning

[John Walker]

Bob, I checked out Turbobuick.com and they have a lot of good info on
SpeedPro...thanks for the tip!

John
----- Original Message -----
From: "Bob Wooten" <r71chevy at earthlink.net>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, June 19, 2001 9:02 PM
Subject: RE: SpeedPro Tuning


> Boy, the mental picture of your truck just changed radically.  This sounds
> like a great toy.  Hope all goes well.  have you tried talking with any of
> the turbo Regal guys (www.gnttype.org http://turbobuick.com/messagebd/)?
my
> understanding is that there are a LOT of them running the SpeedPro.
>
> Good luck, let us know it goes.
>
> BW
>
> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of John Walker
> Sent: Tuesday, June 19, 2001 2:12 PM
> To: diy_efi at diy-efi.org
> Subject: RE: SpeedPro Tuning
>
>
> Valid question Bob.  They truck is pretty well modified currently.  I
enjoy
> drag racing, which is the truck's primary use and a nice weekend drive.
So
> basically, it is a toy. :) I'm currrently running an ATI P600H
supercharger
> with Intercooler, Precision Industries 3400 stall converter, 28" E/T
> streets, headers & exhaust, MSD 6BTM and Blaster 3, Trans-Go shift kit and
a
> few other goodies.  Electric fan and 14psi are coming with the speedpro.
I
> reached a big hurdle in the project after I put in the converter and E/T
> streets.  When I stall the truck up to about 2000K rpm (or anywhere
between
> 1400 and 3000) and try to flash the converter and launch hard, the truck
> just flatlines.  I verified that the timing was infact falling rapidly
> towards 0 degrees when this happens.  I've spoken with one other person
that
> is researching the same problem.  It appears to be some form of torque
> management (i.e. too much engine speed, no vehicle speed cut spark
advance)
> or something to that effect.  I have tried many fixes but nothing has
> worked. On the flip side...an off idle launch around 800rpm will send the
> E/T streets into smoke. Unfortunatelly I have spoke to many people
including
> a couple of active Chrysler race teams, computer programmers and no one
can
> confirm the existance of torque management or the problem.  I have made
> attempts to acquire an internal engineers contact info...but have had no
> luck.
>
> So...enter SpeedPro.  My philosophy is that if the computer is making an
> active decision to cut timing....then SpeedPro will cure the problem since
> it will be making all Fuel and Timing decisions.  I researched AutoTronic,
> Hal-Tech, Electromotive, SpeedPro, and Accell before making my final
> decision.  SpeedPro was proven and the less intrusive harness was
available.
>   Besides the cost, I think it will work well.  So...if I can race
> again...i've succeded.  But a modest horsepower gain should be an added
> bonus.  Plus heads and cam are next and that would surely throw the stock
> computer for a loop.  Their are also a few hiccups the the Supercharger
has
> introduced to the truck that the SpeedPro will fix (stock 1-bar
incorrectly
> reads 30" of vaccum under boost causing a surge in part throttle accel).
> Plus I can ditch the FMU and run a constant fuel pressure and change pulse
> width with boost and rpm.
>
> If your interested in more details check out my website at
> http://www.DakotaRacing.com
>
> later,
>
> John
>
>
> >From: "Bob Wooten" <r71chevy at earthlink.net>
> >Reply-To: diy_efi at diy-efi.org
> >To: <diy_efi at diy-efi.org>
> >Subject: RE: SpeedPro Tuning
> >Date: Mon, 18 Jun 2001 20:04:20 -0700
> >
> >John,
> >
> >If you don't mind me asking why go through all the hassle for 20 HP on a
> >truck?  are you planning on putting a blower on it, or NOS or is this
just
> >a
> >toy?  just curious is all.
> >
> >BW
> >
> ><SNIP>
> >
>
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