fuel pressure regulator

[dramo1]

i have been told this mod is crucial..what pressure am i looking for and should i get one that mounts on all the time or just check periodically

 

[vetteboy86]

Are you talking about a guage to measure your fuel pressure?

 

[dramo1]

yes..also so i can adjust it

 

[Doktor-t]

Fuelpressure gauge

You don´t need to be checkinh your fuelpressure all the time. The most important is that you check the stock setting and save that for a reference when/if you buy a adjustable fuelpressure regulator.

This reference pressure can be used as a baseline when you adjust the pressure for better performance. It´s good to have a point to go back to.

All you need is a fuelpressure gauge with the correct schrader valve to check fuelpressure. Once you´ve set the pressure to the optimum setting you don´t need to check the pressure again.

It´s a good idea to purchase a pressuregauge since it can be used for checking pressure on trannys and other stuff.


Tobias

 

[speedmaster4]

running in closed loop, your ecm pulses the injectors as req'd by o2 sensor feedback.... but in open loop modes--cold engine and (more fun) at wide open throttle (which can be somewhat less than wide open depending on ecm function)--fuel delivery is blindly based on memory by the ecm,pulsing the injectors as it was ''taught'' when the prom was burned...raising the fuel pressure increases the fuel delivered by each pulse, lowering pressure the reverse...pressure manipulation can thus be used to richen or lean mixture in open loop operation (limited by injector design) just like the ''old days'' carb jet changing.

btw--bad idea to leave pressure gage on full time if its a mechanical type--mech gages fail often and smoke from under the hood is not a good thing.