Quote:
Originally Posted by tyl604
TF7 - interesting answer. I thought it helped the turbo to provide boost.
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In the "normal" position, the switchover valve "allows" the ALDA to function normally; the ALDA increases fuel delivery as boost increases. When the valve is actuated, it blocks manifold pressure to the ALDA. That prevents the ALDA from functioning normally, meaning that fuel delivery will not be increased in proportion to boost level.
Quote:
Originally Posted by tyl604
When I had the hoses on the wrong nipples, I had no boost. On the expressway it was a real dog. Then when I finally figured out which hose went where, I got all my power back.
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That's is precisely what you should have expected. If you have the hoses connected to the wrong ports on the switchover valve, you will replicate the "actuated" condition of the switchover valve. (Pressure can't get to the ALDA.)
Quote:
Originally Posted by tyl604
Sounds like you are saying that the power should be there anyway...
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Of course it "should" be there. (Not that I said anything to that affect.) But it's not going to be there if the switchover valve is actuated, if it's blocked or if it's not connected in a way that prevents pressure from reaching the ALDA.