Sick-1

Ok i have 95z 383 heads/cam with tnt 150 shot. Installed walbro 255 36lb injectors. ON the dyno the car would run pretty lean on the n20. Car made 550rwhp on spray. I dont currently have a fuel pressure reg or gauge so not sure what the fuel pressure was. My question is do you think that a racetronix plug and play would be sufficant in feeding the n20 or will i need more pump/ fuel rail modification? I plan on adding the gauge/ reg soon so any suggestions on what to get would help. Thanks.

=ZoomZ=

iTrader: (1)

Dual pumps or a bap is needed ,, your pretty much maxing out a walbro 255 .

The Bap(bandaid) is only good for another 100 hp but it will get you by .

The 255 is only rated at 600 max to the crank and your 550 to the wheels is pretty much right there .

It wont hurt to upgrade your rails so you have some volume of fuel at hand for the injector's

n2ocamaro

I had to add a 2nd intank pump for nitrous. I had fuel pressure problem on a 100 shot. You can do your own dual intank pump set-up for pretty cheap. I spent around $130.00 for mine with wiring and fittings. You can get a Racetronics plug and play wire set for 2 pumps. I already had one for one pump so I just made my own hot wire kit for the second and put it on a switch with my other nitrous switches. I got the Y-block at Home-Depot (in with the compressed air fittings). Here is some pics

Ray@Nitrous Outlet

Without knowing if the fuel pressure is dropping, or what the A/F ratio graph looks like everyone is guessing on whether you need to upgrade.

Can you post the graph?

Is it lean across the board or just on the big end?

Nick@HSW

iTrader: (4)

Why aren't you running a regulator?

Nick