2012 CLS550 ECU upgrade

lambombz619 · 02-24-2012, 08:00 PM

I was wondering if anyone has completed the ECU upgrade with Renntech on a 2012 CLS550 or a new model E550 (2011+). Based on their results it should hit 530hp. I am comtemplating doing the ECU upgrade and upgraded exhaust but before I do I was wondering if anyone has already do it on their E550 or 2012 CLS550?

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Raygt3 · 02-25-2012, 06:48 PM

As soon as the snow and salt clear themselves from the roads, car is in storage over the winter, I'm going to have Renntech do my '12 E550 cab. Talked to several of the folks there and they seem to be very knowledgable and honest. My confidence level is quite high and am looking forward to the upgrade. Will let you know how things work out if you haven't beaten me to it.

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02-25-2012, 06:48 PM	#2
Raygt3 Member Garage is empty, add now Join Date: Jan 2010 Location: Buffalo, NY USA Posts: 201 Drives: 2012 E550 Cab	As soon as the snow and salt clear themselves from the roads, car is in storage over the winter, I'm going to have Renntech do my '12 E550 cab. Talked to several of the folks there and they seem to be very knowledgable and honest. My confidence level is quite high and am looking forward to the upgrade. Will let you know how things work out if you haven't beaten me to it.

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