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Thread: Power from 15Gs at wastegate?

  1. #1
    Why? Because Race Car. verified Feedback Score 0 akotten's Avatar
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    Power from 15Gs at wastegate?

    Some friends and I just got back from a nice drive through the black hills. We were pretty impressed with the car and the power its making considering its only running 6psi of boost. Does anyone know what kind of power this combo should make at 6psi? My mods are in my sig but I'm currently running stock ecu with stock injectors. The heads do have a slight port/polish job but I think its mostly on the exhaust side. The motor now has 998 miles on it so I'm going to try to find time to get everything ready for more boost.


    -Alex
    91 R/T TT
    Mods: RC 550s, Stillen Downpipe, Stillen Cross-Drilled Rotors, HKS Exhaust, HKS VPC, HKS EBC, HKS Turbo Timber, HKS Twin Power, HKS SSQV BOV, HKS SMIC, HKS Fuel Pump, Wiseco Pistons, 3SX Rods, Ferrera SS Valves, 3rd Gen Lifters, 15G Turbos, Centerforce Dual Friction Clutch, B&M FMOC, Unorthodox Racing Underdrive Pulley, EGR blockoff.

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    To be fair at 6psi most TD04`s will be in the same ball park for power, my TD04 16-gs only really come alive over 15psi and really start to shift at 22psi.

    It`ll be a different car with the 550`s and more boost!.

  3. #3
    rawr. verified Feedback Score 4 (100%) Atrosity's Avatar
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    Keith, how are you boosting over 15 psi?

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    I`ve got hybrid TD04-16g turbos, at 22 psi the wastegates are blown open even with the actuator pipes open. I`ve seen 26psi at redline with the rear wastegate wired shut but I only did 2 pulls to see how it felt.

    My 13g`s were the same, felt like 9b`s at wastegate pressure but also a noticable improvement at 16psi.

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    Should be right around 230 whp or so. My 650s at 6 feel like a stock 9b car.
    steve
    97 VR4 12.41 on stock turbos
    91 MR2 13.80 at stock boost
    91 stealth TT with a couple bolt ons
    and a laundry list of others....

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