Your best bet would be to run the ms system as a piggy back not full standalone. Their is a write up on this site that tells you how to install ms while still keeping your stock ecu so when inspection time comes around you can disconnect and look stock again to pass then hock it all back up once it is over.

I live is CA so I fell you on the emissions part. My car had no codes but burned a bit of oil so it failed. Not sure how strict your emissions are in PA but just remember its only once a year you have to pass right. Also here is the link to the write up.


http://www.2gnt.com/index.php?d=MSnS_INSTALL_(parts/wiring_only!)