I've just installed this exhaust in my '19 MK7.5R & wanted to share my installation experience since there still wasn't that much info out there. Overall fit & quality is good & as expected at this price range (not perfect, not terrible). I've opted to go with the version without the SmartBox BT system. So I'm just operating the valves with included 2 sets of remote. While testing I've learned you can partially open the valves by short pressing open button; took 4 short presses to fully open so it's approx. 25% each press.
It seems most would opt to run the valve wire plug thru a grommet that's in the middle of the trunk towards the latch. That would land the plug right on top of the heatshield towards the back, which is no problem. I've decided to use the rubber grommet all the way on the right side - it's above the exhaust tips. If you see photo below you'll see a medium-sized-bunch of wires which will go out thru that grommet.
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I figured I could keep all the wire & the Valve control box on the right side to keep it neater. I decided to use the cigarette plug for power, but wanted to tap into the actual wires. Because of this, I had to take more interior stuff out (even the rear seat bench had to come out in order for me to access.) I think adding the SmartBox will require you to run the wire to the front dash since you have to tap into a fuse & also the battery terminal, (OBD port if you choose to control valve based on throttle / speed).
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Initially I was going to double-side tape mount this control box behind the felt trim, but there wasn't a perfect spot. Also, I figured I may want to see the red & green LED's since those are the 1st thing you'd probably need to check if valves weren't operating. I've used a velcro tape and stuck the box right on it. I put a small slit & ran the wire thru.
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I didn't take too many photos, but here are some extras. Tips are very well made & I can now understand why some companies good $ for these.
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Testing the valves.
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After the 1st test run. It's gloomy wet and salt on the road day here in NY.
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