was readin on a forum some were think octane tat after ever mod on a subaru it needs a map is this true with b4's????
so if an induction kit was putin id need a map????
I would say yes but I would say that for every car as adding an induction kit affects the airflow, and therefore the a/f ratio. In saying that, I've seen plenty of lads put on induction kits and have no problems.
If you decat the downpipe, then you definitely need a map as you will get boost spikes.
A map would be worthwhile anyway as it will transform the performance of the car.
I would personally take it out if it hasn't been mapped for it. Put the standard airbox back in with a good panel filter and remove the resonator from the inner wing if its not already removed.