I have started using CatAClean by Mr Gasket, works great, had a OBDII fault on my 06 Jeep Liberty over a year ago, added CatAClean fault gone. Use in my 02 Bosxter S car runs great.
I've used BG44 in my Jeep Cherokee. I can say it really made a difference. I was actually surprised at how well it worked. I haven't used it in the Boxster though.
1998 Porsche 986
Hybrid Mode
