Yes at idle .seemed fine while driving going up with boost but for some reason my o2s was always low so never really got on it no more then 15 lbs of boost i new i was getting power checked with meter at the alternator was getting 14 plus and at the pump 13 plus .why does the scan master always reads lower voltage it reads 10-11 volts .anyway it was time to drop the tank again and this is what i found.look at pic 1. So replaced it with pic 2 teflon hose.should hold. Soooo if your fuel gauge starts to flicker .and after you run your voltage check and rule out the regulator drop the tank and take a looksy.