I recently installed an aftermarket boost controller on my GN. I didn't like the unit so I removed it and returned to the OEM setup. Ever since I reinstalled the factory solenoid and "Y" fitting I have *no* boost control. At about 2/3 throttle the boost shoots past 24 psi.
I've got the restricted side of the "Y" fitting going to the compressor tap and I've already replaced all of the hoses with new hose and I've replaced the solenoid with a brand new GM wastegate solenoid - still can't turn the boost down. I've adjusted the rod way-way out, much farther out than I ever had to before and still get 24+ lbs. of boost. If I bypass the wastegate solenoid by running a hose straight from the compressor to the actuator it works fine. I have full adjustability and there's no problem. That means the actuator and wastegate are working properly, right? So what could be wrong with the factory setup? Is there anyway to check the signal to the solenoid? Is there anything else I can check?
any input is appreciated.
I've got the restricted side of the "Y" fitting going to the compressor tap and I've already replaced all of the hoses with new hose and I've replaced the solenoid with a brand new GM wastegate solenoid - still can't turn the boost down. I've adjusted the rod way-way out, much farther out than I ever had to before and still get 24+ lbs. of boost. If I bypass the wastegate solenoid by running a hose straight from the compressor to the actuator it works fine. I have full adjustability and there's no problem. That means the actuator and wastegate are working properly, right? So what could be wrong with the factory setup? Is there anyway to check the signal to the solenoid? Is there anything else I can check?
any input is appreciated.