Originally Posted by ILSMKU
I got 16.99whp from my MS pulley! And the dyno to prove it!
Must have been a low baseline, cool down period or something like that. A pulley isn't going to give you almost 20 whp consistently.
Keep in mind if you track your car the pulley will cause the car to run a bit hotter. So if you're tracking the car in 90+ ambient temps it's best not to get the pulley.
I have the RD one on my car.