i have a PWP 02, so you know the soot shows. I have the Aspec rear. I just installed an HKS Hi Power exhaust and after a week, I have black soot on my rear bumper. PWP. I cleaned it off and a week later, same thing. I have stock hangers BTW. Also, I'm not in VTEC all the time FYI.
Anyone know what to use to clean off soot on underbody near the exhaust. The car is running rich, and I havn't had a chance to wash by hand until this weekend. Have been going to the car wash during the winter. Meguire's gold didn't seem to take it off. My car is Pearl white. Any suggestions please.