Hey, I want to get a pulley kit and was wondering what size would be best. I don't want to do 19%, and I was thinking about the 17%. It's a daily driver and I haven't brought it to any tracks yet, so it's not being constantly beaten on. Also, are there any bits of info I should know once I have it installed, such as when to shift to not blow the motor or S/C up? Thanks!

 

I have been running a 17% for about 18,000 miles now. Haven't had any problems. I get on the throttle at least once a day and have been to the track a few times also.

 

Your best bet is the 15% pulley. You can still use the stock 330cc injectors with it. 17% and 19% will require more fuel at WOT, and you will need at least the JCW (380cc) injectors. Heat soak will also become more of an issue with 17% or higher; you also won't really see much of an improvement unless you upgrade the head for more airflow. An upgraded intercooler, such as the GP, can help. If memory serves, for 17% or higher, you have to purchase the reduction pulley for the alternator, or you will prematurely wear it out.

 

ok thanks everyone!