I had no hand in the install, but all I know is this: My car (with the 65mm pulley, Single NW CAI, and EC tune) is an absolute rocket.

I am confident that with the driver mod, I should see low 12's at least.

I plan to either upgrade to the larger X-Stream filter used with the NW single, or simply upgrade to the NW dual... still on the fence as 90% of the cats in the 11's are running the NW single.

But, answering your question, yes the 65mm pulley is a hoss. I love it. My highway ***** are huge... much bigger than they need to be until I get a good radar detector.