Today i used the Blackfire Wet Diamond with Polycharger on my space gray E92.
I hand applied it, and i have to say going into it i was freaking out about putting swirl marks on my paint because it currently has none.
I applied it with the yellow 4.5" foam pads i got at Detail Image, trying to not use any downward pressure, just gliding it along.. about a nickle size at a time. It hazes over and I buffed it gently with a good quality Microfiber.
The results are outstanding. I was shocked how 'slick' the finish now feels. Same for going over the clearbra on my entire front end.
the finish looks deep and full, highly reflective and 'bright'. its so slick i feel like its gonna make my 328 faster
I have a ton of florescent lights in my garage and i could not find any swirlies, whew...
thumbs up for blackfire. the car shampoo seemed to work really well too.