[Gmecm] Vacuum referenced TBI fuel pressure regulator

[DV Fagan]

Hi Jay,
I put the GM Vacuum modulated regulator on my '95 350
K1500.  At the same time I did the mods to raise the
injector pods and clean up the airflow.  Completely
stock, it made good power to 4000 rpm.  With an AEI
aircleaner and a flowmaster 3" exhaust, it made power 
to 4250.  With the TBI airflow mods and the regulator,
it still is making power at 5000.  The cam and
valvetrain are stock, so that is as far as I'm willing
to go. Idle is still smooth and I haven't altered the
prom.

--- Jay Vessels <jay at vessels-clan.com> wrote:

> Hi there!
> 
> Since it has come up recently, how many have tried
> modifying their TBI's 
> fuel pressure regulator to be vacuum-referenced
> instead of a fixed 
> pressure?  What (if anything) did it do for you?
> 
> Jay Vessels
> 1982 Chevrolet S-10 Sport, 2.8V6 TBI
> 1984 Chevrolet S-10 Blazer Sport, 2.8V6 carb. (for
> now)
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> Gmecm mailing list
> Gmecm at diy-efi.org
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> 


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