Thanks for all the replies. I put my stock headers back in and likely my stock muffler this weekend. I never got dyno data but car feels exactly the same. I had the original maxspeed headers. Now it makes the muffler sound lousy so back to stock till I can find a decent PSE. I want the pully and likely Pedro's techno torque instead.
Chris
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1999 986 2.5L, Stock Exhaust (S muffler), EVO Intake, 18" Stock rims (17" during winter), IMS Upgrade, 150k+ miles and counting!
87 944S brought back to life
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