With this Mod and the ECU Flash, my 2020 Grom definitely woke up across the entire RPM range. Easily hitting 60 MPH now and on those long pesky hills, a downshift to 3rd keeps the power pulling. Can easily keep up on 45MPH roads in East TN which means traffic is doing 50-55MPH. Not only does the power increase but the motor is running safely at 7K RPM and higher. Unless your are a geometry wiz, the easiest way to install the airbox mod after making the 40.5mm (4.05cm) hole in the airbox, is to first install the KOSO tube to the Airbox, then the adapter into the tube, then reinstall the airbox on the bike, last the KOSO Tube with adapter ring onto the Throttle Body. The DHM Throttle Body adapter sits on the outside of the Throttle Body, so there is no way for the set screw to come out of the piece and into the throttle body. Honestly not even sure why it is included. It is a super tight fit on the throttle body and in the KOSO tube. Again it only fits one way in the Koso Tube and once it is clamped its not going anywhere. All of this only fits one way, so taking the throttle body off won't help when trying to reinstall. I went with this over the MNNTHBX air intake kit as I prefer a stock look and not sure how much off-road I will be doing, but this setup is definitely better if dust/dirt/water is concerned. However, the MNNTHBX mod would be way quicker. For me I am happy and glad I went with this setup, its also cheaper. I used the thicker foam filter that was already installed in the Hurricane filter. Suggestions for DHM: give a bit more info with the kit, like does it even matter which included foam air filter to run with the ECU flash? Add an Allen wrench for the set screw or at least tell what size it is in some included documentation, on the website, etc. I have precision set none fit. I feel like since this is DHM's name branded kit, I shouldn't need to go to away from their site to find someone else's video on install guide or tips, of which none I found answered these two questions I had. I'm sure I could have reached out, but didn't know I had these questions until after hours, so I was in it to finish it at that point.
