Quote:
Originally Posted by dasams
Anyone have any experience with the MB 3.0 L V6 and an 11,000 lb RV? With 188 hp and 325 lbs ft
|
That's what my Interstate had, before I got a RennTech ECU tune.
https://www.renntechmercedes.com/ind...ducts/sprinter
The stock engine performed adequately, even when towing a 3500# Honda toad. But acceleration was slower than I'd prefer, especially when merging onto the highway in heavy traffic. With the ECU tune, there is a gain of 80hp and 97lb-ft of torque. The van accelerates with authority and has no trouble negotiating steep high-rise bridges or 7% highway grades, with little to no downshifting required on the up-slope to maintain speed. At speeds of 60mph or less, there's even a small increase in fuel economy, though at speeds over 60mph fuel economy is worse. The engine also runs about 10°F hotter than before due to a leaner fuel mixture, but has never overheated in 4 years since I got the RennTech ECU tune.
Best of all, RennTech is an authorized Mercedes Benz upfitter, so if you get the RennTech tune, just make sure the dealer has that info in their computer, and they
won't reset the ECU tune back to factory original during Schedule A or Schedule B maintenance.