Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Underdrive pullies for 2.5L Duratech.

Disclaimers my friend, the term "offroad use" gets a lot of companies out of trouble. Another thing is improper research. On a inline engine the effects of a pulley can be taken advantage of with minial impacts on reliability, but companies often think that they can do that to any engine, and yes they will add some HP but at the expense of durability. Also sometimes depending on the particular crank in question it might be very well balanced from the factory and it might last longer then someone like the dude on NECO who's stock damper was apparently keeping him within the limits and when swapped she blew, luckily he is under warranty.

Think about snake oil like the tornado, etc companies are in business to make money and also by the Sho Shops track record with the BBB do you think they would give two sh*t's about you if your engine blows up? NO. Do what you like just use your head and balance the effects of what your modifying.