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Superb sports car sound; available with either Sport or Mild exhaust tones
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NOTE: Fabspeed’s 200-cell high-flow catalytic converters are not C.A.R.B. certified and are for Off-Road Use ONLY in the state of California
Posted by Jerry on 17th Mar 2014
The sound of the Maxflo muffler with 200 cell HJS cats is a definite improvement over the stock 996TT mufflers and cats. However, there is a harmonic resonance, i.e. drone that you will need to need to expect at the 2000 to 3000 rpm range. I have tried the muffler bypass pipes and the supersport x-pipe and the drone is intolerable for street use. I have had normally aspired Porsches and never had this issue. Perhaps it has something to do with the harmonic resonance from the turbos or the large diameter of the pipes. I have nothing but praise for the Fabspeed sales staff and technical staff. They will work with you until you are satisfied.