I got my truck goin and have driven it all week. I turned fuel up 3 flats and I noticed a difference but I really gota stand on it to get it to spool up. My pyro says 200 driven around and gettin on it I touched 500 once. Btw its a nongated sidewinder turbo. I can hit 10+ psi but I back out so I don't lift a head. Is this normal characteristics or is the fuel still too low??