Howdy all,
Just got back from SuperSprint's headquarters in Mantova, Italy where they swapped the factory ceramic primary catalytic converter on my X3MC at 600 cells per inch with their stainless steel HJS 200 cells per inch downpipe. I was very impressed with their operation in every aspect (staff knowledge, timeliness, and pricing). They were only an hour's drive from my house and needed to inspect a US spec F97/98. They offered me a 70 percent discount if I'd let them measure my US pipes. How could I say no? So, now that it's done what are my impressions? It is a bit louder than before with all the valves open in sport plus. Sounds quite nice but not obnoxious boy racer. With valves closed it sounds just like before, honestly. In fact, it might not be quite enough for me with valves open. I'm considering their secondary cat delete and H-pipe which replaces the resonator. I'll post a video of the cold start in this thread when I can grab a camera operator later. In the meantime, enjoy the before and after pics. Darker pipes are OEM (2k miles). Lighter pipes are the new SuperSprints. Tuesday i will remap the motor with an Italian specialist unless I decide to do the secondary cat resonator delete in which case I'll postpone a week. In the meantime, enjoy the pics.
Updated with videos:
Posted by acce98: