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Originally Posted by trtturbo Actually, the pump will run on low all the time unless you are in boost or manually turn it on high. The resistor does slow it down, but when the pressure switch sees 1psi, it will switch, bypassing the resistor and turn the pump on high. When boost drops back down, it goes back to low. The same switch will also activate the switch valve.
The newer kits (in the last year) come with a toggle switch in the harness so you can run the pump on high all the time. That is mainly for dyno pulls or when its really cold and the oil is too thick for the pump to run on low. |
Interesting. I purchased my kit straight from STS years ago (you were not around then
). That is the information they gave me at the time, that it starts in high, switches to low, and then only goes to high when under boost. I stand corrected.
There are many STS owners who complain about loud pumps. What is your position on that?
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97 Formula A4 Fully Forged 355 - Built, not bought
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