fit filter or not

johnevo4

Full member
Points
61
Car
96 black evo 4
is it advisable to fit a mushroom filter to my evo4.i have a hks mushroom filter to go on to it but i was told that it will take about 10bhp from the engine,is this true or just crap talk.
cheers
 
You can fit the filter but you should also install a cold air feed pipe from the front bumper to the air filter to get the maximum gain. You may loose a bit of low down grunt but you will gain performance in the top end of the rev range.
 
You won't add tons of power with an induction kit alone, but you shouldn't lose it either if you follow TN69's advice and get a cold air feed. The top end will be a little more peaky and you get a great induction roar. Pretty much all the competion Evo's I've seen have some form of induction kit added.
 
Let us know how you get on with it. Give it a few hundred miles for everthing to bed in and the ECU to adjust to it.
 

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