IAC Counts

[Shannen Durphey]

Bruce Plecan wrote:
> 
> -----Original Message-----
> From: Walter Sherwin <wsherwin at idirect.com>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Sunday, October 11, 1998 6:17 PM
> Subject: Re: IAC Counts
<snip>
  The reward is slightly better
> >"shattering" of the fuel and a steeper, more regularly defined cone which
> >helps to reduce part throttle mixture maldistribution (especially with the
> >big 454 blades which tend to "paddle" the fuel towards the rear cylinders).
> >Of course, the injector constant has to be changed to match the new flow
> >resulting from the increased pressure differential.  Starting in 94, GM
> also
> >moved in this direction, with a target system pressure of 26-32psig.
> 
> That is news to me.  Or is this for the CFI system?.
> 
Think it's exclusive to 454, barring Alzheimer's. I speculated it was to
reduce vaporlock tendencies.
Shannen
> Cheers
> Bruce
> >
> >