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I had a K&N and tune and put down 270 RWHP! Not great but the CATs and the stock h-pipe are in place with a side exit exhaust! I was happy....cant remember torque but I think it was 285 but dont quote me on that! J
The difference from just having the K&N CAI to having both the K&N CAI and tune is huge!Forget the dyno numbers, with just a K&N and VMP 93 email tune, I have trapped over 108.2 mph in the 1/4 mile, with consistent 106.8-107.6 mph traps.
My first performance upgrades were Magnaflow's, and the K&N CAI. Had no problems running it that way off stock tune. Then I got a BAMA tune and that woke the car up some more. I have no complaints about my set up.