Re: UDP or not?
^^^All this is very true.
There are quite a few people out there who have had their cars dynoed before and after a pulley install and showed some gains...~7-10 rhwp (this of course is based off dynos and dyno conditions, environment, weather, controlled and uncontrolled variables pertaining to the car, and many other variables involving dyno runs)
Not bad, but as said, if you plan on supercharging it'll have to be removed, and you're altering the normal speeds/patterns at which OEM parts run.
For the 99-04's a UDP from ASP Racing is 225...I'd personally save up for a tuner or gears/tlok, hell maybe look into a windstar intake if you want an engine mod.
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB