I've heard that the 61x ALDA will blow a bit of soot when fully adjusted (or removed). The 602/603 ALDA adjustment doesn't seem to have the over-fueling capacity though. With it full CCW a quick takeoff will look like a rain-cloud fell out of my car, that's it. Seems like the 602 gave me even less visible smoke.

As far as completely removimg it, you can regulate smoke with your foot as others have mentioned, but it seems a bit crude. Also you lose your altitude compensation and overboost protection.

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Gone to the dark side

- Jeff