I also have the 178 asp pulley setup. No tune yet and don't think I will get it. The extra tenth I'll get it on a cool night. Not looking for 11's yet, but under 12.5 will be the next bet with my current setup. The dr's do help, but I think with a custom tune I would get more out of my pulleys. Waiting to get more miles. Only at 2500 so far. I was running low 12.7's with the stock conti's and no pulley. So 2 tenths could of been from the DR's, mph is the biggest increase with the pulleys. I won't be cutting my exhaust just yet either. I'm just going to take the heatsoak and adjust my time when I bracket.