[Perfectlap]

I think if you did the chip, headers, exhaust and evo intake you would get 8-10 horses out of it. I highly doubt you would get that with just the intake. and 8-10 horses is very marginal and that's at speed not from a standstill where most people want it. But on this car those four upgrades would probably cost more $ per pony than any other car on the market.

I've always done the K&N upgrade on my previous cars and its always a great improvement: louder and a little extra oomph. But those cars were designed with budget restrictive air intakes, not the case with the BoxsterS. I also worry about upsetting the finely tuned balance of intake and exhaust. I once had to change the exhaust on a previous car because the intake was working TOO WELL. but The sound that the Boxster makes out of the box is unmistakeably Porsche. I know it a mile away. My friend swore up and down that I would tinker with Boxster performance wise, when I bought it a year ago. I assured him I wouldn't! That's the whole reason for buying a Porsche. They get it right from the start.
Although a full set of Billstein coilovers would be nice. Can't leave well enough alone!

p.s. A premium set a tires is not just for autocross and track, it could save your life! I've read many times that one extra second of reaction time at the average speed limit of 65 mph would avoid 50-60% of all motor vehicle accidents.