986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - DIY Exhaust Mod

Specwar · 11-29-2014, 09:47 AM

I drilled used a .50 bit and then opened it up a bit more to around .75 inches.
Sounds great I don't know about the HP but it leaves things "stock" visually for the CA smog test.

11-29-2014, 09:47 AM	#255
Specwar Senior Member Join Date: Feb 2013 Location: So Cal Posts: 67	I drilled used a .50 bit and then opened it up a bit more to around .75 inches. Sounds great I don't know about the HP but it leaves things "stock" visually for the CA smog test.