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Originally Posted by psfred
You must have two things to get more power with a turbo -- more air (from the turbo) and more fuel. If the boost line from the intake manifold is leaking (or the switchover valve for over-boost protection leaking), you won't get more fuel, hence very little extra power. Check the boost signal line for obstructions and integrity.
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Overboost already removed. The waste gate needs to be modified.
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If the signal line to the vacuum amplifier isn't connected, the transmission will get the wrong vac signal and shift funny -- and may slip badly on shifts, causing it to fail prematurely.
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Please see my sig.
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Your lack of power brakes can be a loose vacuum line or a booster full of brake fluid from a leaking master cylinder, or a bad vacuum pump (the check valves fail, or the cam is worn out).
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I get like 40 PSI at the pump outlet iirc. Master cylinder hasnt shown any signs of leaking yet but if the booster is fill of liquid then I will just clean it out. If my foot is on the brake no amount of revving will build enough vacuum to shutoff the engine. Which is why I am pretty sure its the booster.
At any rate my extra nipple on the ALDA that used to go to the turbo will be used for my new boost gauge.