[quote name='bottletree' date='04 April 2010 - 10:34 AM' timestamp='1270373056' post='75985']
If someone gets lets say a KnN filter all they will be getting is a noise enhancer? Does it really give that much better performance?
[/quote]
Its all in the head it just feels a little shaprer on the throttle to me ive had my knn on for agggggggeeeesssss now and got it for 20 quid. Its ment for an escort 1.6 but sod it

live a little it is VERY loud though and compliments the cat-back system ive got fitted to my car nicley hence why its still on there.
It is VITAL that you get one bespoke to the make and model of your car say for eg you stick a subaru impreza sti knn onto a 1.1 106 pug your asking for trouble and a major loss in power.
Another thing to watch out for carl is when you fit the system make sure it dosent rub on the underside of the bonnet like mine did thats really not a pleasent noise and then you need to go under the bonnet with a touch up stick

.
Mike