Are you running your oem fuel pump wiring?

I had to run external power and a relay to run the 450l/h

using the Perth-WRX mobile app

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2005 WRX STI

No I'm using the oem fuel pump +ve feed as a trigger to a seperate relay which is wired directly to the battery.

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605whp
Quarter Mile in 10.9 seconds @ 135mph /217kph
0-100 kph 3.2 seconds

Found it the hard way. Im changing it soon.

using the Perth-WRX mobile app

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

Yeah that's my current setup at the moment.

450l/h I think draws around 14 amps so probably a good idea to have on a separate relay.





Be sure to use the right gauge cable when running the power to the relay. Mine was melting 15/20A fuse holders and Fuses.

using the Perth-WRX mobile app

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2005 WRX STI

Hey Brett did you have that issue with DW300 too or only the bigger Walbro? I have just had the DW300c installed in my STi.

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Bye bye betty blue. Hello F6.

Sorry to thread hijack Gordon.

No issue with the DW300, that didn't draw anywhere near as much. 2 people I know are running the 300 off the factory fuel pump wiring with no added relay or hard active off the battery.

Just the 450 draws decent current.

using the Perth-WRX mobile app

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2005 WRX STI

Dw300 is a good pump. Quiet too.

Gordon has the same thing I think.

What do people know about pro fuel controllers such as those sold by Aeromotive or DCCD Pro etc?

does it allow the pump to turn off if the engine stalls? i thought that may have been controlled on the negative side of the circuit?

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Doing it for all the wagons out there