Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   Engine Performance (https://www.miataturbo.net/engine-performance-56/)
-   -   Mspnp2 and gm flex fuel snesor (https://www.miataturbo.net/engine-performance-56/mspnp2-gm-flex-fuel-snesor-91533/)

aidandj 12-12-2016 01:10 AM
How are you going to tune flex fuel?

Bronson M 12-12-2016 05:33 AM
Originally Posted by chrisabidaoud (Post 1380622)
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.

chrisabidaoud 12-12-2016 08:10 AM
Originally Posted by aidandj
How are you going to tune flex fuel?
I have a person that will tune it for me

chrisabidaoud 12-12-2016 08:11 AM
Originally Posted by Bronson M
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.
I did upgrade pump and injectors and the rubber fuel lines but i didnt read anything about the fuel regulator

chrisabidaoud 12-12-2016 08:22 AM
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)

Bronson M 12-12-2016 08:24 AM
You still gotta idle bud, wot will be fine but I betcha you won't stay at 42 psi under low load.

chrisabidaoud 12-12-2016 08:26 AM
Originally Posted by Bronson M
You still gotta idle bud, wot will be fine but I betcha you won't stay at 42 psi under low load.
I leave that to my tuner for the idle. any recommendations on an after market regulator ?

kenwo91 12-12-2016 10:41 AM
https://cimg4.ibsrv.net/gimg/www.mia...d7fc96a816.jpg


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