Quote:
Originally Posted by djezlee
I am a noob... just picked up my '17 BRZ last monday. I am thinking about picking up a HKS exhaust (Hi Power Spec L Cat Back Exhaust), but after doing a little research it looks like the pipes are 2-2.5 inches. Can I continue to use this cat back if I buy a turbo in the future? Is this wide enough to support hp gains?
-Lee
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They are 60mm which comes to 2.35". Im sure it will be fine with a turbo although a true 2.5" will be better. Read my post right above again.
I didn't go with the Hi Power Spec L even though it was light because you have to add some kind of diffuser or tray to take the place of the hole changing the stock muffler will leave behind. Its the case with any type of F1 or cannon style exhaust not covering the hole will be a big parachute area behind the bumper catching air. That's if you care about the aerodynamics built into the car.