Re: induction kits help needed
With any induction kit your should see a slight improvement in throttle response, making the car more free reving.
The most important thing to remember when it comes to any induction kit is 'Heat Soak'.
When a panel filter is in its OE airbox it is shielded from engine bay heat (to a point) and feed cool air via the airpipes to the front area of the car, by removing the air filter from that enviroment the first thing is your increasing the surface area of the filter itself which is a good thing, the bad thing is your opening it up to all the warm air in the engine bay.
Heat shields can help a little but the best thing you can do is get at least 1 (more if you have the room) cold air feeds suppling the induction kit with cool air. Some kits come with these if not they can be picked up from Halfords or any good parts supplier. Any tubing can be used but tubing from car suppliers will look the best.
Your lose some mpg as your letting more air in and hence burning more fuel. Also your find your punch the throttle to hear the induction note more often there by using more fuel.
Remember the best air filter is only as good as its supply of cold air!
ALFA ROMEO 156 TS & ABARTH 500