I started my car for the first time in weeks and the car sounded like it could barely idle, when my o2 sensor finally displayed, it showed afr of 10:1. One thing I can say is loosening my AEM fpr to reduce fuel pressure, I can get it to idle somewhat ok, but I have to nearly remove it.

I already contacted my tuner, but I wanted to see if anyone else experienced an issue similar to this while I waited for a response. Below I will have a list of things I've already tried and my current fuel system.

Things already tried with no success:

Changed fpr to stock

Removed return line and installed new hose to a jerry can

Replaced fuel pump with identical pump

Inspected fuel rail (blew air through it)

Inspected fpr line running to manifold and can blow air into it with no resistance

Checked voltage at fuel pump (Just verified, while running it shows 13.83 volts)

With fuel pump disconnected the car can idle at normal afr until the fuel rail is empty

Fuel pressure before the rail is showing 40 psi, hut at the rail it shows 80 psi (Not sure if these numbers are accurate as the gauge on the rail shows 20 psi when removed and other gauge is ebay, but it's all I can go off of right now)

Re-uploaded tune


Current fuel system:

1000cc injectors

340 lph aem pump

BDL fuel rail

Deatschwerks fuel pump wiring kit

AEM fpr

 

You could have a fuel pump wiring or fuel pump issue!

Try a walbro fuel pump