My fuel pump has been doing some strange things since my recent tune. When I turn the key to "on", but not start, I can hear the fuel pump come on and it stays on until I start the car. Before the tune, it would only fire up for about 3 seconds. Now, it will keep running until I start the car. I think it goes out when the car starts, but between the Vortech and my JWT flywheel inside a garage, I can't really tell. I've been watching my fuel pressure and the car still idles at 51 psi and then shoots up to about 80 psi when I hit boost and climbs as boost increases. My A/F are good at 11.0 to 11.5 through the rev band and then 10.3 at redline.

 

you need to change the setting in ss box settings. set fuel pump start rpm to 850rpm, this will keep the pump from starting in (key on, motor off mode) and will be control by boost there after. give detials of your setup.........

 

I have the R4 software, I'll see if I can borrow a laptop and take a look. I have a stock Vortech with a recent tune, crawford plenum and Y-pipe. Pretty basic.