Grounding kits

earwicker7

The Stillen pulley weighs a fraction of the amount of the stock pulley. You wouldn't think it's much, but trust me, holding them both in your hand, you can tell there is a big difference.

Because of the lower weight, the engine revs a lot quicker. In other words, say that at 5000 RPM, you make X HP pre-pulley and (X+5) HP with the new pulley. That may not sound like much of a difference, but the thing is that you get to 5000 RPM in less time, so that (X+5) HP is available sooner.

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2009 Magnetic Black 370Z with Touring, Sports and Navigation Packages--Fast Intentions CBE with 12" Resonators/Carbon Fiber Mufflers and LTH--Stillen G3 Cold Air Intakes, Underdrive Pulley and Grounding Kit--Uprev Tune