If your car has secondary cats with no sensors its a no-brainer as you will still pass emissions without them provided your main cats are hot when you do the test.
If you also replace the stock muffler with a more free flowing aftermarket unit like TopSpeed then what you get is faster throttle response and a nicer muffler tone without the drone.
Leaving the 2nd Cats in place with the TopSpeed mufflers only will result in an unacceptable drone.
It is still quiet when not punching the throttle and just cruising.
When you first go under a bridge and open your windows to hear the echos you will never want to leave that spot...it sounds incredible and will attract all the hotrodders attention immediately.
HP gains are unknown if any but the faster throttle will make your car leap off the line and potentially squawk rubber when you go into 2nd gear somewhat aggressively in an S model. You will be pushed back into the seat with some nice G's while accelerating hard in 2nd.
So do the mod and hang on to your Cajones (Edit Cojo's)!!!
It great to be "S'd"
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"It broke because it wants to be Upgraded
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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)
Threaded Mode
