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Heating and Ventilation

Vehicle Information: Model: 911; Year: 1985; Body Type: Targa; Engine (type, size, modifications): 3.2; Total Mileage: 104,000;

hi chris,this 85' carrera is a track/road car with many suspension mods, also interior mods-including roll cage, racing seats, etc. However, it retains stock exhaust system, with cat.converter bypass. Do you still recommend SSI or is it not necessary-and i should just get a sport muffler-Dansk for example? Also, is a Steve Wong chip better than other chips on the market? Recommendations?many thanks,

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