The S2 Tech Desc Doc specs the max exhaust total length of 2M. Pict shows total length includes muffler and both exhaust tubes.In an unrelated issue of this thread, I have been trying to find more info on routing the exhaust from the Espar towards the driver side rather than having it along the sliding door. The exhaust pipe provided is too short, but more pipe can be bought. The issue that is usually mentioned about routing to the driver’s side is how much “back pressure the Espar needs”. That always draws a blank look on my face. Other threads that people might have found/read/written on this topic?