Do they make any difference to the sound of the car?
Also can the fact they are fitted be spotted by the cars ECU ?
Kp
It's not a big difference in sound, but if you're driving alongside some walls, you can hear additional aid sucking noises if you open the throttle.
Ben will have to chime if if he thinks the datalog looks noticeably different, but he also changed the timing and a few parameters so it may be difficult to know what, if anything, to attribute to the K&Ns.
I'm relying on Alex's experience, but I'm sure the resulting power increase, if there is any, is very small.
Interestingly, the Cosworth ones claim to not require oiling. Does that mean they are disposable then?
The K&Ns only require re-oiling every 50k miles so hardly high maintenance...
Tom, drop Dave (s2gtr) from page 1 of this thread a PM. I'm sure he could send a pair to Holland?
Very quick service and a lot cheaper than importing a set from the US.