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The way to eliminate the drone is to get the 2ndary cat bypass as well from top speed and then you will realize the full benefit without the drone.
however thats only possible if you have 4 cats total, 2 in the headers with all the o2 sensors and the 2nd cats with NO sensors.
removing the 2nd non sensored cats makes a big difference in throttle response with my 01 S with egas. The throttle response is awesome now and the sound is pure sports car music.
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"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
Last edited by jb92563; 05-03-2014 at 08:33 PM.
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