Hi all, I'm doing some research for a friend on his SL63. I'm struggling to find some options for tuning the R230 SL63 6.2 and I wondered if any of you could help me with some questions. From my research the SL63 6.2 has 514bhp and from all I can see, isn't restricted much by the headers alike the C63, therefore with a remap would comfortably get to around 540bhp, is that correct? We're down in West Sussex so, a trip to MSL Birmigham isn't the ideal option. Are Eurocharged (via MSL) able to offer a map/handheld for this car, or would perhaps Rebellion be a good choice for ECU tuning? This brings me to exhaust. With headers, I'd expect that the SL63 is a lot quieter than the C63 due to a more robust set of resonators/silencers on the AMG system. I don't see any RHD options for headers n this car, can anyone point me to a supplier (all I can find is MBH USA)? If headers aren't the options, what else can be done so significantly increase the growl? My personal opinion is the the SL63 is supposed to be refined, but it's his choice. I'm also not a fan of cutting up the AMG systems (like C63 second Cat delete) so preference would be bolt-on options, if it is possible.