Went to the dyno yesterday (again). I didn't bother running a new set of base numbers. My car was 262/284 RWHP/TQ when stock. Then I ran numbers without the pre-cat filter and got 265/285. Then I ran an Xcalibrator 93 octane tune from Alternative Auto (with pre-cat filter removed) and got 274/298. Then I added the JLT CAI with their Xcalibrator tune (plus 2 degrees of timing) and got 286/302. That's a gain of 24 RWHP and 18 ft/lbs. torque from bone stock, plus the benefit of much better throttle response. I did add Flowmaster American Thunder Axle Backs which are reflected in the 286/302 numbers but I didn't install them with any gain expectations (looks/sound only) and I doubt they contributed to any power increases. FWIW - I went to the dyno with a buddy that has a 4.6L Cobra (4V heads, twin O/H cams), underdrive pulleys, longtubes, Bassani cat-backs, timing adjuster and CAI. He was getting about 285/285 (which seems low to me).