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Good afternoon all. I own a 99 911 with the 3.4L engine. Wanting to do the pse hack from the cap to the outlet pipe, but seeing a few posts about people saying this isn�t possible on the 3.4L mufflers. There is a lip covering this cap, if this is ground off and cut open would the result be the same, or is the interior of the muffler different and this sound would not be any better? I initially wanted to do the fister mod between the inlet and outlet pipe, but all the exhaust shops I�ve gone to refuse to even attempt this. Love the car so far except for the exhaust note which is disappointingly subdued� hoping to figure out something to fix this. Thanks!!!
My understanding is I cannot do the easier pse style exhaust (labeled MK2 mod) though with the muffler I have since it�s a �99. I have a shop that will do this work, but will not do the fister mod between the inlet and outlet due to lack of space to cut and weld�
If I were you, I would take a picture of the Fister set-up to show them how easy it is to do, I had Daren at Fister do my 04 C2 and then I did 02 C2 myself. not hard if you have a welder and hole-saw.
That is the Gundo Hack illustrated in your photo. Fister just connects the inlet pipe to the outlet pipe. I don't see why a skilled welder couldn't do either one on the early muffler. Keep looking for a good shop!
I may be wrong but I don't think there is any difference between early and late mufflers in regards to the angle and distance between the inlet and outlet pipes . So the Fister D mod can be done on all of them .
