Poor Fuel Economy After Re-grounding The Fuel Pump - Tuned Powerfc

[some_cs_student]

Hi,

After fixing the broken ground for the fuel pump, the voltage was quiet strong, but, will giving the fuel pump wiring a direct ground to the chassis cause an increased amount of fuel to be used?

Ie. does the PowerFC need a slight re-tune after the ground wire was changed?

I think the chassis ground will be a lot better than the normal car ground, since changing it (factory ground stopped working completely) I've been getting lower fuel economy (could be something else of course).

Any ideas?

EDIT: while re-reading the Fuel Pump Direct Feed Rewire I found someone mentioning 0.5volts rise after using a new ground with a stock pump, so it appears to make some difference...

Regards,

Gareth

[Guilt-Toy]

yeah it can change the flow of the pump because the pump is getting a decent earth now. you should get it checked out or you will run the engine too rich and wash the bores over time.

[some_cs_student]

"Wash the bores"?

Ok, will look round for a tuner, or see if RacePace will do it....but they cost a lot of $$$

When are you coming to Melbourne Guilt-Toy?

Thanks for the prompt reply, will get it done sooner rather than later