I was gonna go with 15% but since I have automatic, and my supercharger is one of the later models with the coating, he recommended 17%.

what are your opinions?

i drive mainly on freeways and spirited.

Danny seems like a very knowledged person, should i go with 17%?

 

I've been taking my car to Danny's for quite a while and respect his recommendations. I would say go with the 17% if he said so.
BTW, I have a 15% pulley on my '05 MCSa that was installed 2yrs ago by Randy at one of his pulley parties.

 

are you satisfied with the performance?

what I'm worried is that i go with 15% and maybe regret not having a little bit extra power

 

Satisfied with the performance of the 15%, but didn't get to compare it with a 17%. The reason I went with the 15% was because not a lot of people with the auto tranny had anything larger and wasn't sure if it could handle >15% ('05 was the first year that the auto was released for the MCS).

 

I have a 2006 MCSCa, and I'm also looking for the pulley upgrade, however i never heard of the "coating" (?)

Hows the 17% doing??