[rolijen]

Hey there. My '21 2SS came equipped with the dual output (non-NPP) exhaust. The previous owner deleted the muffler and was running a MagnFlow, axle-back system with no muffler. It sounded amazing but was obnoxiously loud for my neighborhood.

I, being a nerd, decided to DIY an NPP system to tame the sound level in my neighborhood, but open it up everywhere else. About a month ago, I found the correct quad-output muffler with exhaust control valves and actuators on fb marketplace. Then began the fun part--building a controller circuit to open and close the valves (my wife has been calling it my 'science project'). I'm happy to report that I got the circuit board completed yesterday and made the cables to connect to the actuators this morning and started testing the system.

Testing proved the system and it works perfectly with both a wired switch and a wireless remote. I'm now ready to plan the permanent installation in the trunk, under the floor panel, next to the fuse block.

Here's where I need your help: Please share any photos you have showing the actuator wires path on the factory NPP systems. I need to get the cables from the actuators, into the lower trunk space. I assume there are plugged holes somewhere for this purpose.

Please, share photos/videos that can point me in the right direction. I really don't want to drill holes if I don't absolutely have to.

Thank you!