hey, I have a 2.3L whipple on my 03 Cobra and the boost will not build past about 15 lbs. I can feel it's down on power too. I'm getting same boost readings from the analog dash gauge and my AeroForce OBD gauge. I have a 3.1in pulley which should be about 18 lbs. The boost dump actuator is removed (think they call it boost bypass mod) and the manifold pressure goes straight to the Whipple bypass valve actuator. The other side of bypass goes to atmosphere.
I dont think there's a manifold leak cause it would probably throw a code. I think maybe the bypass is not closing all the way but i dont know how to check it. You cant see it. I put a vacuum pump on the atmosphere side of the bypass valve actuator and saw no difference.
I emailed Whipple and after a lot of back and forth they said the boost isnt getting past the rotors, meaning they dont think rotors are the problem. They wouldnt tell me how to confirm it's not the bypass valve though.
Anybody know how to check it? Other suggestions, other that pull the blower? thanks!
I dont think there's a manifold leak cause it would probably throw a code. I think maybe the bypass is not closing all the way but i dont know how to check it. You cant see it. I put a vacuum pump on the atmosphere side of the bypass valve actuator and saw no difference.
I emailed Whipple and after a lot of back and forth they said the boost isnt getting past the rotors, meaning they dont think rotors are the problem. They wouldnt tell me how to confirm it's not the bypass valve though.
Anybody know how to check it? Other suggestions, other that pull the blower? thanks!