we_todd_did

iTrader: (97)

Ok here is the deal, I installed twin pumps and when both are on I have 80lbs of fuel pressure and the car will barely run and it throws my nitrous tune way out the window? Any reason for this?

OUTLAWZ RACING

iTrader: (9)

Do you have a regulator? and tune for the injectors?

MIGHTYMOUSE

iTrader: (59)

you smashed your return line while putting the gas tank back in

blake culp

iTrader: (8)

What is your fuel psi on one pump? Did you drop the tank or cut a trap door? Is it a 98 or 99+ car? On my 98 without the bucket i could see a second pump getting in the way and possibly kinking the return line from the regulator. But I think mightymouse is right, you smashed the return line, its pretty easy to do if you dropped the tank.

we_todd_did

iTrader: (97)

Its a 2000 car I cut a trap door, and with one pump on it is only 60psi if both are running its 80 psi.