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Old 02-14-2015, 11:18 AM   #15
KRAM36
Need For Speed
 
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Join Date: Feb 2013
Location: Funville
Posts: 2,112
Garage
Try this mod, it does sound good. If you want louder go with after market.

DIY Exhaust Mod – Gain of 10+ HP!!!

or drill completely through the muffler like I did lol.
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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