[jb92563]

You need a pulley that has at least one hole in it so you can use a bolt, but if no hole then you will need to clamp it with a vise grip and some pieces of wood to protect the pulley.

Having driven my Tarret 4" UDP for a few days now I'm very pleased with what feels like extra torque and power.

It also seems like the engine sounds smother and quieter.

The extra torque in first gear needs a bit of getting used to, as it was raining this morning and I have been getting a bit of tire spin using my old familiar technique.

A little slower application of throttle in the wet is required.

Overall, I have to say it was a much easier install than I thought it would be, although grinding off the casting protrusion was a pain because I did not have a right angle grinder that would fit in that tight area so I had to use an airtool saw and file to get at it and tidy it up.

A 90 degree die grinder air tool with cutoff wheel would have been the perfect tool to get in there and get it done quickly without fuss.

No problem getting the old pulley off either as the shaft is not tapered so simply prying it off with a long screw driver is all that is required.

You also need a cheap 24 mm socket and cut it down to the minimum to go over the bolt head with a grinder as its a tight space in there and not much room for the socket and wrench.

Well worth the ~$200 and perhaps the most HP bang for your buck of any mod you can do to a Boxster.