986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Fabspeed bypass pipes

sd_boxster · 09-03-2009, 11:48 AM

I have the Fabspeed bypass pipes installed on my '03 2.7. I have also done the "Crios" mod - i.e. drilled a couple of holes through the inside of the exhaust pipe into the center chamber of the muffler. I'm delighted with the combination that these two tweaks made to the exhaust note.

I cannot say that there is any power difference, but the sound is awesome.

Since I lost weight from the back by removing the secondary cats, I was able to delete the spare tire to keep everything trimmed out.

I have read that the 2.7 will still pass smog without the secondary cats. I'll find out for sure next August. You will not throw a check engine light, since the O2 sensors are located fore and aft of the primary cats.

See my thread (Exhaust mods = crying babies :)) for clips of my setup.

09-03-2009, 11:48 AM	#3
sd_boxster Registered User Join Date: Oct 2008 Location: San Diego Posts: 434	I have the Fabspeed bypass pipes installed on my '03 2.7. I have also done the "Crios" mod - i.e. drilled a couple of holes through the inside of the exhaust pipe into the center chamber of the muffler. I'm delighted with the combination that these two tweaks made to the exhaust note. I cannot say that there is any power difference, but the sound is awesome. Since I lost weight from the back by removing the secondary cats, I was able to delete the spare tire to keep everything trimmed out. I have read that the 2.7 will still pass smog without the secondary cats. I'll find out for sure next August. You will not throw a check engine light, since the O2 sensors are located fore and aft of the primary cats. See my thread (Exhaust mods = crying babies :)) for clips of my setup. __________________ 1999 Carrera 4 • Aero kit • 4" UD Pulley My Corvette doesn't leak oil... it sweats horsepower.