My 500E failed its emmissions test (NY State) miserably. HC's were way, way up. We had to pop in a '92 400E module, and she passed fine. My 500E has the chip and k&n's, but I think mine is a Superchip, although I am still not sure.

David Hendy
'92 500E 65k miles
And waiting for a no snow day to have my ASR defeat switch installed!