Interesting info... for me I'm not sure the modest increase would warrant cost. I went a different route, I took mine (03 4.6is S3 originally done in 2005) back to Dinan in Menlo Park and talked with Steve. We decided the best bang for the buck to increase power/torque was to cut the pulley wheel. This boosted the pulley wheel rpm's and output of charge from the Vortech V-2 I currently have on the car. They had to re-map air to fuel and do some additional fine tunning. Overall I was happy with the modification.

bf

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