MAF TBI

[Webb]

peter paul fenske wrote:
> 
> Dear George
> 
> Not to take the wind outa ur sails but TBI metering is not terribly
> accurate. I suppose you could use the TPI ecm, reset the mode
> to aynchronous and change the injector constant. Prob quite a few other
> things to make it go. But why. If you did this you would be
> able to completely reprogram your tbi.
> 
> Airsensors I believe who are now outa business once offered such a
> system. It was supposed to have worked okay.
> 
> To be honest when I ran the TBI on my truck I had more off idle
> torque than the TPI right now. TPI comes on about 2000 rpm and is
> better there.
> 
> And remember these systems have a self tuning factor of about 20% or so.
> So oem even Map are relatively adaptable. Summit now sells a adjustable
> regulator for TBI which would help more.
> Also in the GM parts basket is a adapter which was used on 454 SS trucks
> about 90 or so which takes the weird tbi bolt pattern to a slightly less
> weird guadrajet/thermoguad bolt pattern.
> 
> Ps has anyone checked out the ECM holley advertises for their DFI series.
> 
> GL George: peter who really doesn't know that much:
> and is quite bogged down with DSP course
> 
> At 09:38 PM 3/29/97 -0600, you wrote:
> >Yep Scot, so true. But ECM wizzards like you and Peter F. could burn a prom
> >that would allow a MAF signal for a TBI system. When GM says TBI they really
> >mean "The Bare minimum Injection equipment"
> >
> >gmd
> >
> >At 09:42 AM 3/29/97 -0800, you wrote:
> >>George M. Dailey wrote:
> >>
> >>> Ladies & Gentlemen, MAF TBI has the greatest potential of being the
> >>> "Holy Grail" of a universal fuel injection system for almost any
> >>> engine, from single cylinder to V12. Feed on this:
> >>
> >>George, neat idea, but GM really did not mix MAF and TBI.  There are no
> >>present older ECMs that do what you want.
> >>
> >>I also agree with you that the OEM stuff is the way to go.  It justs
> >>takes a while to learn how it works.
> >>
> >>
> >>> I'm not 100% sure that full asyncronus operation is possible or
> >>> desirable.
> >>
> >>The GM V-6 such as the TBI 4.3L are mostly always async.  They have an
> >>open plenum intake manifold and I guess that GM was worried about mixture
> >>distribution.
> >>
> >>Scot Sealander    Sealand at clarityconnect.com
> >>
> >>
> >>
> >
> >
I've been looking for an adjustable fuel pressure regulator. The
"adjustable regulator" you mention- is that what you meant?

I'm not very well plugged into the performance auto scene - who is
"summit" and where might they be contacted.

Thanks
RTW