[C Man]

Originally Posted by Revalot

The main reason I believe the back of the GM sportcars build up black carbon is the tip design. being bell shape at the tip is a bad idea(Exhaust flows over on bumper/ license plate). My chevelle had a big block 468 that ran pig rich, but my tips are straight out, with my Atak tips there straight out also. These flare/bell tips are a poor design.

May be an excuse for me to get a new exhaust.

[ohsmily]

Originally Posted by arpad_m

I honestly wonder how (or if) people manage to do this and not put swirls and scratches into the paint. Are you ceramic coated and do you do a touchless wash every 3-4 days, or a regular two bucket wash, or...?

Using a light touch with a non-marring wash implement with ample suds moving in one direction with each stroke, using a rinse bucket, and blow drying the car (no touch for drying) seems to be working very well for me.

[KLR ZL1]

I just read in my Car and Driver mag that the new Ford Exploder ST has a hole in the bottom of the tailpipe just before the tip to help with some of the soot from DI.

[viurniel]

Originally Posted by arpad_m

I honestly wonder how (or if) people manage to do this and not put swirls and scratches into the paint. Are you ceramic coated and do you do a touchless wash every 3-4 days, or a regular two bucket wash, or...?

I had it ceramic coated and apply spray-on ceramic approximately every 90 days. Also, I take the two bucket approach a level up and use multiple rags to minimize the chances of swirls, etc.

[sengli]

My car is yellow, and I have the dots also. Tips exhaust tips are always black.

My diesel trucks exhaust is sparkling clean.