Quote:
Originally Posted by churchx
norcalpb: oem one is parachute depending on what catback is used, as it works together with catback-s muffler. If there are different shaped aftermarket mufflers, eg. longitudinally placed or at angle, then they would benefit from extra diffuser or in general some aero element to to direct flow around stock bumper cover's edge.
|
To expand on this, if you don’t have a muffler you can still buy these for pretty cheap to maintain the flow that the stock muffler creates. I agree that a car without a muffler is creating a parachute due to the openness behind the bumper.
Apexi:
Trd:
Borla:
