747

[Bruce Plecan]

-----Original Message-----
From: Stowe, Ted-SEA <StowT at PerkinsCoie.com>
To: 'diy_efi at efi332.eng.ohio-state.edu' <diy_efi at efi332.eng.ohio-state.edu>
Date: Tuesday, November 24, 1998 5:38 PM
Subject: RE: 747

Run, don't even walk away from them.  The only accurate info I got
from them was injector sizes.  The first rewrite of a chip I bought there
was getting one for a TCC aplication.  After first Free rewrite $50
No 747 needs a VSS, but do you want things right, or close to it,
or just so it runs.  Yep, step right up, we got what ever you need,
and in every color, just plug er in and wawy ya go, don't need no
gas either, sorry I get carried away...
Cheers
Bruce


>I have a good question about the '747 too.
>turbo city sells a complete TBI system for small engines for about $1200.
>they say that they use a ECU from a GM truck. I asked them if it was a '747
>and they said yes, I asked him how they sell it for 4, 6 & 8 cyl
>applications, do they edit the prom for each ? and I was told that they
>don't , that the '747 works on percentages. I was also told that their
>system does not need a VSS signal.
>they sell a complete system with a wiring harness, fuel pump etc.
>http://www.turbocity.com/Index.html
>that info on the '747 seems contrary to what I've read here. does that
sound
>like
>a stock '747 ??
>thanks, Ted Stowe
>-----Original Message-----
>From: rauscher at icst.com [mailto:rauscher at icst.com]
>Sent: Tuesday, November 24, 1998 12:50 PM
>To: DIY_EFI at efi332.eng.ohio-state.edu
>Subject: 747 Idle Learn, GM OEM

>
>     I have a good question regarding the 747 ECM. Does
>     this system need to go through an idle learn?
>
>
>     I ask as I know that there are other GM ECM's that
>     do go through an idle learn. While in this 'learn'
>     time, the idle is about worthless. The engine will
>     stall, sputter, rev-up, rev-down, heck, I almost
>     hit the car in front of me during one 'rev-up'.
>
>
>     If the 747 has an idle learn time, it may help to
>     explain why so much work needs to be done to get
>     some vehicles to idle properly.
>
>
>     I now know the manual procedure for the idle learn,
>     it takes ~20-30 minutes at idle. Or, like I did,
>     a full weeks worth of driving... This is on a '92
>     MPFI 3.1L Camaro. (A 1227737 ECM??).
>
>
>
>     Thanks,
>
>     BobR.
>
>     --
>