scottydouk

iTrader: (3)

When install a second fuel pump for antisurge setup, can you join into existing fuel pump wiring or best to run separate switch / wiring?
Cheers

trevsjwood

iTrader: (2)

Newage or classic ? either way you need to wire into the fuelpump controller so it acts in the same way as the car fuel pump, i.e. primes and then shuts off until the engine starts. I've fitted one to my newage so can give you relevant info but not sure on the classic.
Trev

Dubzy

iTrader: (4)

You need to install new power wires for the second pump as you will be doubling the load and the factory wiring wont be happy. Use a relay thats triggered from your in tank pump to switch the second pump on and off. the switch is opperated on the negative side not the positive. the wiring plug can be found under the rear bench.

scottydouk

iTrader: (3)

Thanks for replies, it is to go in a classic.
Wheres the best place to pick up new power feeds, straight from battery or ignition barrel?

Dubzy

iTrader: (4)

It would be best to run a new fused power wire straight from the battery wired into a 20 amp relay.

trevsjwood

iTrader: (2)

I have a 30amp relay on mine as that was the one used in the set-up I copied.
Trev

scottydouk

iTrader: (3)

One more quick question, already have the uprated in tank fuel pump, when install anti surge setup and run external fuel pump aswell, will the car need remapping again? Or just make sure have same fuel pressure on regulator and watch afr?

trevsjwood

iTrader: (2)

Mine runs more pressure, just wind the regulator back a tad and all ok

legacy_gtb

iTrader: (3)

Shouldnt need a remap if the pressure regs the same, but worth checking it is bob on as any variation means rich or lean.

Primary pump isnt supplying fuel line pressure with a swirl pot any more, its just keeping the swirl pot full and any excess returns to tank..... hence no pressure.

The new secondary pump from the swirl pot is the one that supplies line pressure to the engine.