Vehicle was purchased 7/07 as an off-lease vehicle w/ only 20k on it. My 2002 3.5 SE was nearing 90k, so the "upgrade" to the 2005 was necessary. Stock horsepower is 250 with a torque rating of 249. I have some intake and exhaust revisions so far. A high-flow 27" Magnaflow resonator was added as well as an increase in exhaust piping from 2.25" to 2.5" from the resonator to the mufflers. I have added Magnaflow 14851 mufflers and removed the restrictive y-pipe "crimp". Horsepower is probably somewhere near 260 or so, but I'm probably being a bit conservative. Only the dyno will tell. I expect most of the horsepower increase to come from the y-pipe revisions, though. 265+ horsepower is pretty realistic after this is performed. 0-60 times have averaged ~6.5 seconds or so, with a best of 6.4. 1/4 miles times are ~14.8-15.0@94mph on average. Technosquare ECU to be applied shortly, eliminating the speed limiter and adding quite a bit of horsepower as well. Top speeds with the 5 speed auto have been reported in the high 140 range with manuals exceeding 150 or so. Maximas with the same horsepower ratings and same engine w/o the speed limiter have been reported to peg 149 on track tests performed by major car enthusiast magazines, so a top speed of 150 is not unrealistic.
