Bypass Valve / BOV did not function; now functions too well
I looked around the forum for an answer to this but I wasn't quite sure what to search for so here's a brief history of the problem:
I bought a 2007 GXP last week that looks like it has a stock turbo with a Fujita aftermarket air intake. The bypass valve/BOV was not operational when I bought the car (I heard a fluttering when decelerating) and the check engine light was on. Used car dealer said that's just how it is. Took the car to GM dealership and they said they couldn't do anything since it was not 100% stock. Performance was good until yesterday when I noticed that car was a bit sluggish. It seemed to be worse this morning and I found a post on this forum that said an ECM reset could fix it. So I unplugged the ECM for about 30 min. Now the bypass valve/BOV seems to function (no more flutter and I heard the pressure release) but any slight reduction in throttle makes the valve open. At low speeds this makes driving a bit jerky (the only way I can describe it).
Any suggestions would be greatly appreciated since neither the used car dealer nor GM seem to know anything.
Jason
I looked around the forum for an answer to this but I wasn't quite sure what to search for so here's a brief history of the problem:
I bought a 2007 GXP last week that looks like it has a stock turbo with a Fujita aftermarket air intake. The bypass valve/BOV was not operational when I bought the car (I heard a fluttering when decelerating) and the check engine light was on. Used car dealer said that's just how it is. Took the car to GM dealership and they said they couldn't do anything since it was not 100% stock. Performance was good until yesterday when I noticed that car was a bit sluggish. It seemed to be worse this morning and I found a post on this forum that said an ECM reset could fix it. So I unplugged the ECM for about 30 min. Now the bypass valve/BOV seems to function (no more flutter and I heard the pressure release) but any slight reduction in throttle makes the valve open. At low speeds this makes driving a bit jerky (the only way I can describe it).
Any suggestions would be greatly appreciated since neither the used car dealer nor GM seem to know anything.
Jason