618whp stillen supercharger !!!
I don't know if I'm just late to the party or something, but ive never seen anything above 550whp out of the stillen kit. I noticed stillen posted on their instagram page about this q50 detailing all of the mods. (Picture below) I thought this was really impressive.
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Stillen G3, z1 Intake Manifold, Stillen Headers, Z1 HFC's, Stillen Catback. 330whp 267 ft- lbs tuned at Z1 motorsports.
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