Put it this way had I bought a J&S when I installed my turbo I'd probably still be on my stock motor....two sides to that, I'd still be on a stock motor and would have a little fatter wallet and I would still be on my stock motor and probably would feel as safe running 20pounds of boost....I say get one its money well spent.
New Toy 2013 Focus ST3 Performance Blue
2011 F150 FX4 Blue Flame Metallic SuperCREW EcoBoost 371RWHP/458RWTQ
89 Mustang 5.0 Turbo 670 rwhp-Gone
07 Mazdaspeed 6-Gone
03 SVT Focus Turbo 326whp/278wtq-Gone