Over the weekend I installed my 19% pulley to our 1,800 mile S. I thought I'd have power gains, but nothing like this. The acceleration is intense! Everything else is stock, but very shortly I'll be installing the famous "HAI". I have barely gone over 6,000 rpms. I don't feel the need to on any occasion so far. There is about 400 miles on since the pulley and it just keeps getting better and better. I highly recommend this mod for evryday use. It just got alot more fun to drive.

 

Congratulations, sounds like you are pleased. What is the max rpm's you can go now with the 19% ?

 

As long as you still have the stock rev limiter - you're fine. No need to keep your revs down although you'll find that you don't need to rev it high at all to go fast!

 

RE the HAI mod. I have a 2005 MCSC and planned on this being my first mod. Did you notice that there are two lines running into the main tube that runs from the filter to the sc. Prior HAI mod info only discussed a single line to either filter or put into the K&N.
Do you think the same options apply here?
Norm