5.0kidsdad

Thanks Jeff. The car has a custom tune chip and would be going back for another (tweeking) after supercharger install. You touched on another question I had. I was going to put on aftermarket (larger) fuel rails. Do I need them?

Pro....Am I going to need the external pump as well? The 255 is not enough and wont keep up? I dont want to have to put another pump on if it is not necessary. Does anyone make a in-tank pump higher than a 255 lph?

Thanks in advance.

JeffUtica

That's a loaded question. What are you putting down for rwhp? Fuel rails certainly won't hurt you because now the bottle neck is the stock feed line form the tank to the fuel rails and you can tune around them. Your chip tuner should be able to tell you if you hae anought fuel by data logging A/F and fuel pressure.

Depends on which 255 pump you have. Is it a high pressure pump or standard pump. Walbro makes a non-high pressure pump GSS307. They also make a high pressure pump GSS340. To get the most out of your pump, I would wire in a relay so you don't get any loss of fuel pressure as a result of volotage drop through the factory wiring harness. With a relay you get what the battery is putting out and no loss of fuel pressure.