Hey this is 2kflamed lude, Im using my buddy login real quick..Anyways.. I finally got my car back and it will not stay Idle. They installed the JRSC FMU, with my greddy e manage. I have engines codes up the ***.. Im running way to rich.. So we took off the FMU and change the plugs.. Which it was fouled out badly. My question is what could be causing it to not stay running.. ?? Thanks guys... My motor if fully built and full head work and cams.. Weird thing is I am still using stock injectors and fuel rails.

 

Running stock injectors with a JRSC (and no FMU) you are going to tear it up man, those injectors won't supply enough fuel without the added fuel pressure from the FMU. I bet your running way lean right now, if you removed the FMU. They must not tune for **** at the place you got the SC put on. Stock injectors w/FMU can provide enough fuel, but not one without the other. Makes it more difficult to tune with an FMU on there, but it can be done, I did it.

I had a/f problems big time at first, it was running so rich I was spitting gas out the rear, and it didn't like to idle. After a trip to a great tuner (mad props to Payn) and all is well.

 

We got the FMU out and its still running rich.. Im taking it in for dyno tune tommorrow at 12

 

Rich at idle, but I bet it's pretty lean under boost. Good luck on the dyno, let us know how it goes.

 

I guess my lude is lean at idle and when we rev the motor it runs really rich and then dies.

 

Hmmm..Our problems were a bit different then, mine was way rich all the time. Where is your fuel pressure set at? Do you have a fp guage that you can check and see how much the FMU is adding?

 

Ok i have no fuel pressure regulater, and i have the jackson racing fuel pump, and i do have the e manage. Im going back wed for dyno.