Thread: 3% CO on LM-1
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911nut 911nut is offline
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Originally Posted by beepbeep View Post
Idle CO screw doesn't do much on boost. It's primarily there to adjust idle emissions. Once on roll, AFR's aren't affected by it much.

Adjusting the mixture screw changes how much of the slits on the control plunger are exposed in the control plunger barrel, which routes fuel to the distribution chambers. End result is that more or less fuel is is flowed to all injectors for a given deflection of the air flow plate.
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 11-21-2009, 10:49 AM
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