Imagine my disappointment when my new 2018 RGS had it's big sucker ac and pipes installed and when I went to tune my FP3 there were no maps to download. That is right the 2018 models have a unique firmware different from the M8 2017 models. I called V&H and was told that he maps should be ready in a week or so. Back to stock with slip-on TBR and it runs fine but I swear the stock exhaust is pretty close to the same sound. Looking at adding the big sucker and V&H true duals when the maps show up.