N54 Fuel Pressure spiking!

[Turbotimer]

Hi guys so Im a total noob at forums lol. but here it goes

I have a 2010 BMW 135i and the fuel pressure is all over the place. I read on here people with similar issues but they're running PI, my car is on DI only with a Helix overdrive on full e85.

My current fuel setup is:

Helix Overdrive
Precision Raceworks Stage 3 Bucketed Fuel pump
Speedsty EKPM Upgraded board with Dual Relay

Can anyone help me shed some light on this issue please?

 

[whyzee125]

Is your HPFP or LPFP spiking? I believe the Speedsty is non-PWM controlled, meaning even when only the main pump is running, it's running at 100%. You'll end up with high fuel pressure when cruising because of this.