I have a 2003 Mazdaspeed Protege with a turbo. It has a HKS Blowoff-Valve and Tial Wastegate with a boost controller. For the boost gauge I tapped into the FPR line. When I’m driving and I press in the clutch to shift or put it in neutral the revs will drop to 0. This issue only happens when the engine is warm. I’ve already replaced the MAF sensor, EGR Valve, crank position sensor and the fuel pump, but I still have this issue. Also if I floor the gas pedal sometimes it will stick, I already cleaned the throttle body and it still happens. Any ideas on what this could be?