I put on a JDM 2lb pulley a few weeks ago and finally got out to the track last night. Befor I put in the pulley I was turning out 9.5 - 10lbs by the end of the track. Now I get to 10lbs after about 60ft but the problem is that I only get to 10 It races up to 10 and then stops.... I tried pulling the boost dumb wires but it still just goes to 10.



Mark

 

I had a problem like that and the belt was slipping.. Might want to check that.

 

According to Jim himself, all the pulleys fall a bit short of the actual rating. 2 Lb is more like 1.5, 4 is 3.5 ...so on and so on.Not to mention the factory guages aren't the most accurate around!

 

Is this a 99 or 00 with a stock air box? You may be starving the filter.

Andy

 

If you are useing the stock boost guage, put a after market boost guage on your truck; if you really want to know how much boost you are pushing. The stock boost guage is good just let you know you have boost.

A filter kit, if you dont already have one is a good idea as well.

 

I have an autometer guage in (damn those things are nice to have) and an airaid intake. Just put in my 90MAF the other day so im going to see if that was the choak in the line.