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Hi Mike,
Last year I upgraded my engine to 3.4 using Mahle P&Cs and I use a GT3584 turbo with .82 A/R, with a 7.7 C/R and with that turbo I was expecting a sluggish low end but I was surprised with a very responsive and very early boost (I could feel and see the boost take-off as low as 2000 rpm), it seems the 3.4 has enough air to move that turbo quickly! .. One of the big tuners here drove my car and he told me to go for GT40 turbo because he feels the 35 is small for it. I'm using a 3.2 carrera intake but a very cheap (OBX) chinese exhaust with big muffler.
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-1977 911S Coupe, Mahle 3.4, single GTX3584 turbo, - G50 5 speed trans, Haltech 2500 engine management.
-1987 Carrera Coupe.
-2013 Carrera S PDK Coupe, factory Aero Kit. My DD.
-1987 928S4.
Last edited by kamaro; 02-04-2025 at 11:52 PM..
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