Still wrapped up in
AO Silver Member
Join Date: May 2009
Location: United Kingdom
I have a K&N on the Spider and it made absolutley no difference to sound or throttle response, though of course she is a dirty derv.
Conversely, on my TT 225 turbo I fitted a panel filter and opened up the airbox and it definitely improved the throttle response low down and gave the car a slightly nicer, rumblier note under pick up. They call it a 'Wakbox' round them parts and it is par for the course for pretty much all tuned TTs.
With yours being a a petrol turbo too maybe you would get a similar result. The induction kit is cheap as chips compared to the stuff you have already had done, so might as well have a go for £70 IMO.
Luck is the residue of opportunity and design...