I recently heard that you should adj the fuel pressure with tha vacuum hose on tha FPR off,is that correct cause when I take the hose off, the pressure drops signifigantly????? advice and info needed!!!
Set the Fuel Presure to 59 psi with the vacum line off. This will be what you are looking for. If you want to run xtra high HP set the fuel prsure to 60 PSI with vacum line on but only do so if you are trying to get more than 270 WHP do not go for more than 290 WHP with second setup.