#3159, "Better to call em "Power Pulleys"" In response to In response to 0
AEM did some measurements on my car for these parts last time I was there. Note that these are different alternator/PS pulleys that accomplish most of the same goal as the standard underdrive pulley on the crankshaft, with the exception of reducing rotational mass on the crankshaft.
For those that have doubts about any long term side effect from aftermarket underdrive pulleys, these will be an effective alternative. I personally am more interested in these, and am glad to hear that AEM is moving forward with marketing Power Pulleys for our application. I've basically been pushing for them for the past 6 months or so.
