Originally Posted by gspot35

JPC- Boost should come up with RPM...you probably can't make full boost in 1st gear, but every other gear should give you 8psi near redline. I make very little dust if any as do a lot of other people.

Sunset- are you sure you have no vacuum leaks? Is your idle stable for 2-3 minutes straight? You could have your cog belt idler too tight creating too much resistance. If you have belt dust, it's caused by friction. Either by mis-aligned belts or loose belts. Remember the load increases on the s/c as boost builds, so slippage will occur at high rpm where it's hard to see. Good luck in your hunt.

Originally Posted by gspot35

JPC- Boost should come up with RPM...you probably can't make full boost in 1st gear, but every other gear should give you 8psi near redline. I make very little dust if any as do a lot of other people.

Sunset- are you sure you have no vacuum leaks? Is your idle stable for 2-3 minutes straight? You could have your cog belt idler too tight creating too much resistance. If you have belt dust, it's caused by friction. Either by mis-aligned belts or loose belts. Remember the load increases on the s/c as boost builds, so slippage will occur at high rpm where it's hard to see. Good luck in your hunt.

Originally Posted by mysunset

gspot - From what I can see, all vaccuum lines are good. no kinks and smooth bends throughout - the car idles great. Before driving the car, i make sure it is warmed up before heading out. I will agree that dust would be caused by friction, that is what I figured.

I will look again at the cog pulley, and review all the vaccuum lines. Maybe I missed something. I am leaning towards mis-aligned at this point, but the thought about the cog idler pulley may be worth investigating.

Thanks again for your input