Fuel Regulator Question ~

[Wilson13B]

How to tune it?

Now i had the base pressure set at 3.8Bar and turn out the engine runs horribly rich....

On highway drive on top gear when cruising,the engine is run horribly rich when on part throttle and cause jerking,even when WOT it is still rich as the engine like having no pull/feeling heavy+black smoke behind.....

FYI the engine is a L9 Turbo,running SR20DET pump and a Tomei FPR,other then that all is stock ~

Need help from u guys before i get it too lean and blow it.....

Thanks for any help =)

 

[achelone]

what is the original pressure for L9 Turbo? set the FPR to that level and see.....

 

[Wilson13B]

what is the original pressure for L9 Turbo? set the FPR to that level and see.....

Don't know as i didn't install any Fuel press meter before i install this FPR ~

Now the CEL lit up....aiks =<

 

[Izso]

Wilson13B : 55psi on that engine might be overdoing it. Try reducing to 45psi (about 3bar).

Just wondering though - what AFPR are you using? some fakies out there are very unreliable and the gauge does not show the true pressure it's working with.

Also, I don't think how rich or lean it is depends on the AFPR. You're using a high pressure fuel pump so regardless of the AFPR setting, you're still pumping out a lot of fuel. Kinda like how a normal car with a Walbro will react. You'll need management and a wideband to adjust the Air Fuel mixture. Or just downsize your fuel pump.