Mspnp2 and gm flex fuel snesor

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12-12-2016, 01:10 AM

#21

aidandj

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How are you going to tune flex fuel?

12-12-2016, 05:33 AM

#22

Bronson M

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Quote:

Originally Posted by chrisabidaoud

Probably wont be able to check it until Wednesday i have a couple of stuff to do first. I need to put the engine in the car and finish putting it together i already installed a walbro 450 i was told it was good up to 800 whp of e85.

Based on your other questions and inability To search I'm guessing you did nothing to the fuel system other than drop that massive pump in the tank...... That ain't going to work, it'll overun the stock fuel pressure regulator.

Take about 5 steps back and do more research before your project ends in a part out.

12-12-2016, 08:10 AM

#23

chrisabidaoud

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Quote:

Originally Posted by aidandj

How are you going to tune flex fuel?

I have a person that will tune it for me

12-12-2016, 08:11 AM

#24

chrisabidaoud

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Quote:

Originally Posted by Bronson M

I did upgrade pump and injectors and the rubber fuel lines but i didnt read anything about the fuel regulator

12-12-2016, 08:22 AM

#25

chrisabidaoud

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Quote:

Originally Posted by chrisabidaoud

I did upgrade pump and injectors and the rubber fuel lines but i didnt read anything about the fuel regulator

On the '90-'97 cars, the FPR is referenced to manifold pressure, so the fuel pressure will always be roughly 42 PSI (median) above manifold pressure. Or put another way, the pressure differential across the injectors will always be ~42 PSI, and therefore the flowrate of the injectors will be a constant. I wouldnt think that the pump will over run the regulator if i have big injectors ( correct me if i m wrong)