^^^ most metal polishes should be able to get it out. When i first got my car my tips were burnt black and yellow to the point where polish wouldn't even make a dent in it. I ended up using very fine sand paper and wet sanded it off before repolishing to a shine.

 

Thanks for the tip! Yeah my S is pretty much a weekend / sunny day car. I also live in MN so it's in storage for 5-6 months out of the year. I got a couple requests for a short writeup with pics so I'll post that up when I'm done.

 

it will be easier to get the bolts off, it will soudn nice with the stock exhuast. I love mine rite now, it adds a little kick w/o it being too loud

-Sam

 

wheel cleaner gets all the gunk off like butter with a rag.. the exhaust tips actually clean up much easier than the wheels.

 

and you dont have to really scrub it either just spray

 

wax your bumper as well because the crap that sticks to your exhaust pipes will also likely stick to your bumper