From the airbox to the intake manifold, air is routed to the engine at a defined volumetric rate that allows optimum combustion for specific levels of performance. Any alteration or failure within this system can therefore cause drivability problems like hesitation or rough idling. You can try cleaning and sealing these components as much as you want, but more often than not, installing brand new OEM parts is the best cure for these types of problems.
Air Filter
It's important to make sure that your air cleaner is clean at all times. The cleaner filters outside air before it enters your engine. Dirty air filters will constrict the air flow, and reduce your overall horsepower and gas mileage. You should replace
13-72-1-256-410-M63
Air Filter, CS Coupe (2 Per Car) Brand: Mann [Photo]
$7.25
Intake Manifold Gasket
The intake manifold gaskets used to seal the intake manifold to the cylinder head.
11-61-1-730-788-M17
Intake Manifold Gasket (6 Per Car) Between Head & Manifold, CS Coupe Brand: Victor Reinz [Photo]
$1.25
11-61-9-065-676-M17
Intake Manifold Gasket Between Head & Manifold (6 Per Car), CS Coupe Brand: Victor Reinz [Photo]