Originally Posted by tom @ eas
Exactly. The airbox leave very little on the table for improvement.
~10-12hp gains can be seen switching to the the Macht Schnell S2 intake, which retains the factory airbox.
Aren't these intakes (Including the OEM intake) designed to move air into the intake system more efficiently while the car is in motion (Not a RAM air system but similar)?
Also, at what point would you do a tune (ECU tune like a Dinan)? After an intake, pulley, exhaust mod? Or would you do a tune after doing just an intake mod like this?