I've never used protool, but I can tell you I've had issues using generic code readers for BMWs. in one case it wasn't properly showing the throttle position it was reading 75% when it was 100. I like Carly because it's BMW specific and it's cheap as compared to buying a BMW specific code tool. It does enough things to keep me happy like managing my OBD2 readiness, doing light coding, checking and clearing codes Etc.
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Harrop Supercharger, BPM Tune, K/W Coil over kit, Stoptek BBK, Magnaflow exhaust, ear to ear grin everytime I drive...
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