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In addition to the new tube design
the APR system retains the critical PCV vent path on the muffler pipe for necessary for proper engine operation
This section replaces the factory BMW Section 1
000 Mile warranty on the catalytic core
Have the stock downpipe but plan to go aftermarket later
Fabspeed 911 Carrera RSR Header Muffler Kit (76-89) (FS.POR.911.RSRWHTS30) 15190 In addition to the newThis complete headers back high performance exhaust system provides loud & aggressive CUP car sound with dual outlets. SOUND: With free flowing headers straight into our Maxflo Muffler, expect a huge increase in volume over stock. POWER: This full exhaust system was designed to unleash as much power as possible with little compromise. On our DynoJet we saw peak curve gains of 17 whp and 13 ft lbs of tq at 3900 RPM and maximum HP is increased by 12 whp