Regular cab short bed , 5.4 3.55 LS. DynoJet 248C 250 peak HP 271 peak torque. Dropped to 247 HP with air filter element removed----go figure. RW

 

 

That's pretty good assuming a 20% drivtrain loss. That would put your truck at about (250RWHP/.80 representing your 20% drivetrain loss) is about 312 flywheel HP. Does anyone know the actual drivetrain loss for our trucks or is 20% a safe assumption.

 

You probably lost all of that HP cause the new MAS sensor is tuned for the bone stock intake....any extra flow and it will cause a lean condition which can cause power loss.

 

17%, pretty good.