ok, to awnser the cobb question about torque.....it comes with no instructions
we installed it based off of the write up on page one.....
as for the belts...I installed my cobb pulley at 34k miles, we reused the belts.
now at 36k miles there is a screeching under heavy acceleration. we are checking the belts today, and possible replacing them.
our theory is that it is either the belts or the turbo. it is very consistent at wot in 2nd getting on the freeway etc. so we don't think it is the turbo.