Mercedes-Benz CLS400 3.5L twin turbo ECU tuning and bubbling installation!

Thanks for your help.

This time we received a request for ECU tuning and bubbling for a late Mercedes-Benz W218 CLS400.

Actually, this CLS400 is quite an unusual engine. The engine model is M276, which should be the same as the engine used in the C43 and other models, but while the C43 has a 3L V6 twin turbo with 367 hp (390 PS), this CLS400 has a 3.5L V6 twin turbo with 333 PS. The car is only available in a few countries and is not seen very often.

First, remove the ECU as you want to make a backup as usual.

It was removed! There was a stable Ultra Racing tower bar, but it was like a ring of wisdom and removal was complete!

It was the same type of ECU as the C43 and E43.

The data is read in by connecting wires to specific pins in this way.

Torque out both the bottom and the top by writing data and test driving several times. The fact that the mileage is 160,000 km is also taken into account.