Just the extra pull and sound I was seeking
I was seeking an easy add-on to my S2000 that would make the biggest performance gain for the buck. There were a number of forum posts saying this was the one, so I picked it up. Installation wasn't that straight forward as the directions were missing a few specific notes on which washer/screws to use. Then I had to punch a 5/8" hole in the plastic and shove a rubber insulation piece for the O2 sensor. In any case it got in and WOW...sounded great and pulled just that much harder.
FIPK for 2006 S2000
It's good value with the coupon from auto anything. I had a little discrepancy with my order but customer service was fast and so was shopping. Installation required drilling the tube for a sensor which made the install not as especially if you don't have the right tools. Good experience overall.