Hi everyone just replaced my hks induction kit with the std airbox but with a k&n panal filter ive noticed the car runs very nice but does not seem as quick with a lot more lag.Its just everyone i have spoken to has sworn by the original airbox but my car seemed to be better with the induction kit or is it just the fact you can hear the turbo more given the impression its quicker.Any body else have any ideas cheers

 

have you reset ecu every time something is changed i always reset the ecu then try the difference not saying it will make much differance but sensors will be reading different and classic ecus are slow to adjust

 

do a dyno run. swap your filter over between runs. thats the only way to find out.

stew