School me on Hot Wiring please.

[1LowLeSabre]

Why is this done? Mine is hasn't been done and I'd like to know the advantage of it and how to do so.

 

[BlackBandit]

Basically you use the factory fuel pump power wire to power a relay. This enables you to run a larger dedicated power wire to the pump which in turn enables you do meet the current demands of a higher output pump.

 

[83ttypecooled]

Hotwiring

Hi,
Several vendors will supply you with complete kits. I chose Racetronix for my car;a very good ,complete kit.On a hoist,the job takes a couple of hours maximum.Basically, you are running a dedicated line from B+ ,usually on the alternator,through a relay to the pump. No chance of resistance in the circuit causing low voltage at the pump, and subsequent low fuel pressure. I would advise you to buy one of these kits as insurance,if nothing else.

 

[BlackMetal]

Even on a stock pump it's good to upgrade the wiring to make sure it's getting plenty of voltage. But yeah while you're back there might as well install a better pump.

Not a hard job at all on a lift, still bearable if you need to do it on a driveway.

 

[83ttypecooled]

Hi,
Companies like Racetronix usually offer the hotwire kit and a Walbro340 as a package deal.
Our tanks are easy to pull, and the upgrade to a better fuel pump is just more insurance. Nothing worse for our motors than lean misfire!

 

["Turbo-T"]

It's done so you don't blow your engine or head gaskets due to inadequate fuel flow. The stock wiring uses tiny little wires. The hot wire uses a big fat wire off the alternator. Remember wire sizes are like water pipes, the bigger the more flow.

 

[1LowLeSabre]

Ok, thank you guy's.

 

[Racetronix]

RXG7-FPKG

 

[1LowLeSabre]

The previous owner told me that my cat has a ATR Super Pump, but it was not hot wired.

 

[sugarandopium]

They have a great pictorial writeup on the install here:
RX-G7-FPWK