420A Anyone running a BEGI FMU?

[Brad Bell]

I'm running a BEGI 2025 rising rate fmu on my turbo 420a, removed stock fpr, with 440cc injectors. Is anyone else running this fmu? I have my base fuel pressure at around 20psi, however even with the brass adjustment needle turned all the way out(supposedly lowers maximum fuel pressure/rate of increase) the fuel pressure still skyrockets up to 90-100psi. Which is WAY too rich, reading under 10AFR. I've heard of a restrictor I can install in the signal line to possibly slow down the rate of increase, but not sure where to get one.

 

[colt2096]

I have used a Begi fmu in the past and works great, you have to keep the original fpr installed, fmu will not control the standard pressure without the stock fpr.

 

[Brad Bell]

I have used a Begi fmu in the past and works great, you have to keep the original fpr installed, fmu will not control the standard pressure without the stock fpr.

Interesting, because the Hahn stage 2 turbo kit told me to remove the stock regulator.

 

[Dark DSM]

Interesting, because the Hahn stage 2 turbo kit told me to remove the stock regulator.

In this case you may just want to install an Aeromotive 1:1 FPR........ at least you'll have full control over your base pressure.