Hello all,
I have the NOS dry kit for the returnless style fuel systems. When I was on the dyno last week my A/F was good up until about 5500 and ended at 12.9 at about 6k. The tuner said my A/F was a little lean. He then programmed the injectors to pulse longer to add more fuel. So on the next run the A/F was the same. Basicly be said I need a bigger fuel pump.
So here is hot the NOS system works. Our fuel pumps keep a constant 50 to 52 psi of pressure. the Fuel enrichment circuit that comes with the NOS kit interfaces with the computer making the computer think that the fuel pressure is only 15 psi while nitrous is engaged. So the car's computer "sees" 15 psi and tells the fuel pump to go full bore to try and bring up the fuel pressure back to 50 psi. And thats how the extra fuel is added.
So my question is what pump do I need and can the tuner make the new fuel pump dump in the right amount while I'm spraying?
Thanks for any help
I have the NOS dry kit for the returnless style fuel systems. When I was on the dyno last week my A/F was good up until about 5500 and ended at 12.9 at about 6k. The tuner said my A/F was a little lean. He then programmed the injectors to pulse longer to add more fuel. So on the next run the A/F was the same. Basicly be said I need a bigger fuel pump.
So here is hot the NOS system works. Our fuel pumps keep a constant 50 to 52 psi of pressure. the Fuel enrichment circuit that comes with the NOS kit interfaces with the computer making the computer think that the fuel pressure is only 15 psi while nitrous is engaged. So the car's computer "sees" 15 psi and tells the fuel pump to go full bore to try and bring up the fuel pressure back to 50 psi. And thats how the extra fuel is added.
So my question is what pump do I need and can the tuner make the new fuel pump dump in the right amount while I'm spraying?
Thanks for any help