Re: TBI maunderings continue

["DENNIS L. PETTERSON II" <dpetters@domain.elided>]

On Wed, 25 Nov 1998, Tom Harais wrote:

> Roger:
> 
> >From what I've seen of GM TBI ('88 Trans Am - 305 TBI) I'd say you could
> mount the injectors in or over an old carb body. The "round manifold thing"
> you are refering to is just a set of venturis with throttle plates mounted
> in the base. Not unlike a carburetor with no fuel connection so that jets,
> power valves and idle circuits are defunct.
> 
> Whoops! I wonder if there is some type of idle circuits or anything in
> those TBI units? 
> 
> Tom H.
Hi Tom,
 The way I understand  the TBI system,the computer "tells" the injectors
how long to open.This amount of time is determined by the information from
the various sensors and then is compared to a preprogrammed "fuel map".So
to get to your question NO there are no idle circuits per se.

                         Dennis
                         75,77,79 II's