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Old 08-17-2009, 01:10 PM   #7
thomas1976
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Join Date: Jun 2006
Location: Switzerland
Posts: 1,712
Car: 91Trans am WS6
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23

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Re: glow shift fuel pressure gauge

Quote:
Originally Posted by vorticaldavid View Post
i was thinking of doing the same but using this fitting............
http://www.toolsource.com/fitting-01...y-p-95304.html
anyone know if it would work?
I use the same fitting and put it were the flexhose connects to the hard fuel line next/behind/under the alternator on the fuel feed line (top).


Quote:
Originally Posted by l_dis_travlr View Post
On these tbi units, what does monitoring the input pressure indicateother than the output of the pump, which I assume will be rather constant.
I assume for tuning, one would be interested in the pressure drop as
rpm/load increase, to insure that adequate fuel is being delivered.
True/False...
I can understand measuring pressure between the regulator, and the
injectors. But how can this be accomplished on tbi's?
It shows the pressure applied on the injectors. It is supposed to be stable, but all tbi cars I have mesured FP indicate a 0.5 - 1 psi movement of the gauge as you open the trottle quickly.

The pressure is created betwen the fuel pump and the block-off diaphram of the return line (regulator).
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