Jason's Mercedes-Benz C63 AMG W204 came to Revhigh after a major engine refresh and some performance upgrades. Powered by the legendary M156 6.3L V8, the car had received reconditioned cylinder heads, updated head bolts, extractors and a set of performance camshafts. However, after having the car tuned elsewhere, Jason wasn't completely happy with how it was performing. Starting With a Dyno Test We put the C63 on the dyno to establish exactly where the car was at. The initial

When it comes to extracting real performance from AMG’s handcrafted 5.5L BiTurbo V8, the exhaust system plays a massive role. Karl’s Mercedes-Benz GLE63s recently visited us for a serious upgrade — and the results speak for themselves. V2 Design Downpipe & Midpipe: Engineered for Performance Our V2 downpipe and midpipe system is the result of extensive R&D and flow-bench testing to ensure maximum efficiency, reduced back pressure, and improved turbo response. The result? A d

Karl brought in his A45 for a health check and retune. Vehicle was tuned before but the crackles were too aggressive and it felt down on power compared to many we’ve tuned before. We strapped the vehicle down and performed 2 back to back runs. Initial power was 200awkw then 217awkw on the second run. After removing the tune and running stock we had a best run of 190AWKW. After our dyno tune process we ended up with a final result of 265AWKW. We then proceeded to fit a cold ai