I dont care what it did to your car, everycar is different... even if they have the same engine and same chassis etc. I drove this car for 12month without a K&N and now it's had the K&N on for 3days and I noticed the difference straight away once I hit 40-50mph.
Oh and I've also noticed summet else since.
I was pottering around on my drive, parking it up and I noticed how unbelievably smooth it is ... not jerky-ness at all anymore ... no vibrations or nothing when ya slowly moving around... fantastic... even my brother who is adament that inductions kits (ON ANY CAR) are pointless, admitted that it was smoother.
anywayz...
I said earlier I drove two V6 mk4's and both drove totally different... one was insanely fast and the other was rather poor and slow.
All depends on how they were run in, and this goes for all cars.
Theres an old man down the road from me, hes got a T reg Polo 1.4 and it has 4000 miles on the clock (he only drives around town, and its a small town) ... i'll feel sorry for the next person to own it, cos it'll be the slowest 1.4 T reg Polo ever to exist.