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boost control

  1. Modded APC Question

    C900 Performance, Mods & Tuning
    Hi guys, So my '89 has a swedish dynamics box, 3 bar FPR, and bigger injectors. If it matters, it also runs a cooler thermostat and generally operates at 1/4 on the stock temp gauge. Different from stock C900 turbos Ive owned in the past, this APC seems to almost never cut boost, and will...
  2. manual boost help

    9-5 Performance, Mods & Tuning
    i am starting to upgrade my 2003 saab 9-5, so far i have put a after market intake on it and i was interested installing a manual boost gauge, but i wasn't sure what set up i should use.
  3. Boost issue on 2.8t V6

    9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
    Scrolling thru the threads, I have found similar circumstances; however, none are quite like mine. 2007 9-3 Aero 2.8t V6, 126K for mileage. 6-speed stick. I have brand new OEM coils and plugs. The tach stays nice and smooth and the engine is smooth, no bucking or stuttering at all. The...
  4. boost: moaning & groaning?

    9-5 Workshop
    Recently, the water pump and a heater control valve were replaced on my '02 Linear. On the way home from the shop, I immediately noted an audible groaning from the engine bay that correlates to "yellow" on the boost indicator. The turbo or related plumbing groan on both increasing...