Well, to be fair..I was in the same classic line of thinking.......
Now I have a piper x replacement filter, superchip and decat on the standard exhaust. I must say that the difference is amazing. These things I have done has turned a great car into an awesome one. At the last RR day at BBT with my heavy aftermarket wheels on I made 166.8 on the rollers for not alot of dosh. My reckoning with the original wheels and some optimax in the tank shed make in xs of 170. Makes the car far more enjoyable to boot.
Horses for courses.
Bill.