https://mbworld.org/forums/ Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG. en Tue, 19 May 2026 18:16:35 GMT vBulletin 60 https://mbworld.org/forums/images/misc/rss.jpg https://mbworld.org/forums/ https://mbworld.org/forums/m275-v12-bi-turbo-platform/927192-pop-thump-noise-under-car-when-door-open-startup.html Tue, 05 May 2026 22:12:01 GMT I've an '07 CL600 Coupe with about 80k miles. I don't drive it much but start it up every couple of weeks. My problem is that I hear a thumping/popping noise coming from under the car. Sometimes it starts when opening the door and continue for a few seconds and only seems to occur for a few seconds as it's part of the car's start up sequence. I suspect it's ABC-related. Appreciate anyone's thoughts? ]]> M275 V12 Bi-Turbo Platform WIldcat465 https://mbworld.org/forums/m275-v12-bi-turbo-platform/927192-pop-thump-noise-under-car-when-door-open-startup.html https://mbworld.org/forums/m275-v12-bi-turbo-platform/927042-cl65-check-out-my-custom-intake.html Fri, 01 May 2026 19:47:54 GMT Just finished my custom intake system. Best I've seen in my opinion, but let me know what you guys think. The goal was to make it look as OEM as possible under the engine cover and pick up air in the coldest possible place.








]]> M275 V12 Bi-Turbo Platform anton28 https://mbworld.org/forums/m275-v12-bi-turbo-platform/927042-cl65-check-out-my-custom-intake.html