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Is an aftermarket knock sensor (from BAP Auto Parts) equal in quality to the dealer sensor? And, just wanted to make sure, the turbo and NA sensors are interchangeable, correct?

I don't know if I'd use an aftermarket sensor... If they copied Subaru's original design then they might have the same flaw that prompted the redesign.

The turbo and NA sensors are indeed interchangeable.

vrg3 wrote:I don't know if I'd use an aftermarket sensor... If they copied Subaru's original design then they might have the same flaw that prompted the redesign.

Ooooh, that's a good point. I wouldn't have thought of that. Thanks Vikash!