turning the N75 screw CCW increases boost?
07-30-2005, 01:27 PM
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turning the N75 screw CCW increases boost?
I've had a steady 2psi difference between requested and actual boost. The boost gauge indicated a very steady 15psi. I took a stab in the dark and turned the N75 screw about 1/8-1/4 turn CCW. Today, my boost is up to a very steady 17psi.
I haven't logged 115 yet to verify, but the difference on the boost gauge is very clear. Does it sound like a fluke? I didn't touch anything else on the engine. I can't wait to get the AVC-R and WI installed
thanks
I haven't logged 115 yet to verify, but the difference on the boost gauge is very clear. Does it sound like a fluke? I didn't touch anything else on the engine. I can't wait to get the AVC-R and WI installed
thanks
07-30-2005, 04:52 PM
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You can definitely adjust boost with the N75, BTDT. I just don't remember which direction does what.
I would have though CW would increase and CCW would decrease, but maybe not. My advice is don't mess with the N75 too much because they have a tendancy to "stick" at a certain settings when tweaked a few times, BTDT and had to swap in a different N75.
07-30-2005, 06:04 PM
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believe me, I didn't really want to tweak the 2 month old N75 valve
They're expensive. WIth no boost leak I had to try something. Those N75 set screws have some serious thread lock on them! I just drove around and went WOT probably 10 times. My boost is definitely back up where (APR thinks) it should be Their 100 code only requests around 17psi.
Their 100 code only requests around 17psi.
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