So I got my 370s, SARD FPR running stock fp, knock sensor, Walbro 342 pump, z32 fuel filter, and MEVI installed now running the stock ECU and a32 maf.

On a cold start, my car will stall after the RPMs shoot up to about 2500rpm.

Upon shifting into neutral to coast to a stop, the car will also stall some of the time.

My RPM needle falls super fast and practically touches zero.

I have new plugs as well and the TB EGR IAVC are cleaned.

I have a UR UDP and flywheel.

Maybe I need to adjust my idle to be higher?

I seem to remember seeing someone else having this issue, but I was not able to find it.

Any other ideas? What should I idle at?

 

i think mardi ended up having to run an s2000 style ignition button because he was going super rich on startup

how did you dial down the stock fp with the sard.

is everything hooked up right?

did you end up running the z32 maf to correct the difference with the injectors?

you should be idling around 700 rpm

 

You are running too rich. Lower your fuel pressure to 27 psi.

 

It has a little screw to lower the FP.
I am still looking for a cheap z32 maf.
I think I am at 700rpm.
That rpm needle drops like a rock to like 100 rpm and "sometimes" bounces back up to 700 and does not die.

I do not have a FP gauge yet. I had borrwed one for an hour and used stock. It makes me nervous to go below that. :/

 

I dont think it will hurt to run your FP that low. 34psi with 370cc is a bit too much. I use RC engineering's calculation of new flow rate vs old flow rate after FP change and I get 14psi of FP to get you 370cc to flow 240cc @ idle.




right now, you can confirm this buy pulling #6 plug.....I bet it is dripping wet.

 

Thanks for the info.

I feel safe lowering it for the idle, but what happens if I got WOT?

You guys pretty sure that this is the problem?

Maybe I will just buy a mech gauge to install in the engine bay?

 

unplug the vacuum hose to your FPR and check the gauge again, that's your FP @ WOT. when there's no vacuum to the FPR, the FPR thinks that you are @ WOT.

then use that number and plug it back into the calculation to see if you can get 240 as your new flowrate.

 

he is right your 370's are probably just dumping fuel, especially at startup. lowering the pressure will do it