Misignitions in M8 models

Servus with each other, I’m new here and I registered because I couldn’t find any answers to my question. I explained the starting situation quickly. I had a Fat Bob 114 with the M8 engine and a Jekill & Hyde flap exhaust system. For me at the time of the hammer! After some time I was driven over a pile and finally I got my money from the opposing insurance (since not self-inflicted) transitionally a Sportster Iron 883 mi Now I am standing between two models in the decisive decision: Low Rider ST 117 as a new bike with J&H for an unbeatable price Slim S 110 SE with a kess. The Low Rider can be horny, is more comfortable and practical The Slim S is just brutal! Is there a way, in the best case on a legal way, to read the new Milwaukee 8 machine even more “reddishly” as the Twin Cams sound I would hate to do without all the banging and popping of the Aga from the Twin Cams. Is there anything possible about shutting down thrust (without motor/cat etc. To destroy)? Does anyone have experiences? Would mega be grateful for fruitful answers, as I am now facing the decision. Best regards