Hi

I have a question since I put a conical filter, the car rev up faster, but before 5000-5500rpms no power

with the stock air filter with K&N takes forever up to 4500 rpms, before 4500 rev up faster to redline and 0.9bar



Now with apexi resonator delete and apexi pod filter, rev up faster to 4500-5000 but after 5000rpms feel lack of power




Loose torque? or the power band move to lower rpms


impreza 93, kakimoto catback exhaust 3''
apexi resonator delete
apexi pod filter

 

No you have changed the breathing quite significantly and the car needs a proper remap as the fuelling and ignition is out.

 

ok, remap is needed

 

need make something like this