Dual Walbro 450 Question

nsteezyy · 06-30-2017, 04:21 AM

For those running Stage 3 LPFP Kits...
How many of you guys are running a hobbs switch on the second pump, is it necessary? Anyone running both pumps full time?

Hopskins · 06-30-2017, 10:13 AM

I'm about to hook mine up and I believe you have to have wired to some type of pressure switch. I have the hobbs switch as well as wiring it to a 40 amp relay.

AWSAWS · 07-03-2017, 10:03 AM

On other forums I have seen that running 2 walbros full time will generate too much heat, warming the fuel alot. Hobbs and a relay looks pretty straight forward.

06-30-2017, 04:21 AM	#1
nsteezyy Private 1 Rep 56 Posts Drives: E36 M3 \| E90 335I Join Date: Sep 2014 Location: Utah iTrader: (2)	Dual Walbro 450 Question For those running Stage 3 LPFP Kits... How many of you guys are running a hobbs switch on the second pump, is it necessary? Anyone running both pumps full time?
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06-30-2017, 10:13 AM	#2
Hopskins Enlisted Member 1 Rep 34 Posts Drives: 2007 E90 335i Join Date: Dec 2016 Location: Cincinnati iTrader: (0)	I'm about to hook mine up and I believe you have to have wired to some type of pressure switch. I have the hobbs switch as well as wiring it to a 40 amp relay.
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07-03-2017, 10:03 AM	#3
AWSAWS Colonel 279 Rep 2,340 Posts Drives: E92 GC Turbos, FBO, 335i DCT Join Date: Nov 2012 Location: Valhalla iTrader: (0)	On other forums I have seen that running 2 walbros full time will generate too much heat, warming the fuel alot. Hobbs and a relay looks pretty straight forward. __________________ GC Turbos, FBO, JB4, DCT, Port Meth injection, BMS Charge Pipe, NGK plugs. EBC brakes and pads, LED Angel lights, LED foglights, LCI rears OCC, Braided brake lines. Custom Diff Lockdown Kit, VTT inlets, TMAP, stage 2+ fuel pump 11.79@119mph (stock turbos) 11.74@129mph (GC Turbos)
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