Quick question guys,

I got the M4 to 2.5mm cable to use in my FC with the 440d. Just wondering where you guys are mounting the gauge. I want to mount it on the A piller. The cable is only 4ft long. Also, if using an extension cable would mess with the signal that the MTX-L sends to the ECU (link below)

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If it's digital the rule of thumb I've been told is try to keep the runs under 10 feet. For analog you should still try to keep it short due to possible interference, voltage drop, etc.

In short, try to use the shortest line you can.

I have my AFR gauges mounted low on my center console. When I'm tuning I'm looking down at my laptop (and thus, right near the gauge) and when I've driving I don't want that bright distraction in my face. With a decent tune I don't need to know what's happening all the time either.