![]() The V4/V8 mode can also be disabled completely as well. Beer Nazi 11,713 7 38 36 2 dieseldan723 said: I can only get about 17-18 lbs of boost with my Hypertech tuner on level 2 or 3. Activating at a higher speed would allow for full benefit of the Max Energy 2.0 engine tuning in V4 and V8 mode at those higher speeds where the exhaust sound isn’t as noticeable. In the first installment of this two-part series ( White-Glove Treatment - Duramax Power and MPG Upgrade' ), we performed an experiment using Hypertech’s Max Energy 2.0. Adjusting the minimum speed higher would prevent the V4 mode from activating while the road noise is low and V4 exhaust note is noticeable. Just know that if you do run into an issue and need support, it will be difficult to find good customer service at Superchips. If you can get one cheap, it's an easy way to correct your speedo, remove the speed limiter, and read/clear dtc codes. K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: Fits 2014-2020 Chevy/GMC/Cadillac (Silverado 1500, Suburban, Tahoe, Sierra 1500, Yukon, Yukon Denali, Escalade) V8,63-3082. I run the middle tune and can feel a difference, albiet minor. This item: Hypertech 32501 Max Energy Power Programmer. Updateable products include Max Energy 2. I have one primarily to correct the speedo. ![]() The Max Energy allows you to adjust the minimum speed at which the V4 mode activates. The Superchips FlashPaq F5 Tuner is a great tuner that is best for monitoring anything and everything that is going on with your truck, even while you are physically driving it. Most Hypertech products are easily updated over the internet using Hypertech’s internet update software for Windows. These systems have major benefits in fuel economy, but with a sacrifice in drivability when in V4 mode, and during the transition to V8 mode. We perfected the engine efficiency in V4 mode for both regular and premium octane. Stage 3 on Hypertech’s Max Energy programmer yielded an additional 88hp over the stock Duramax and, more importantly, a 25-percent bump in load-moving. ![]() These systems allow the engine to turn into a fuel sipping 4-cylinder during light load conditions such as steady speed cruising. It shows our Mobil Delvac-sponsored 2008 GMC Sierra’s performance: a gain of 88hp and 156 pound-feet in torque over the stock 6.6L Duramax numbers we’d pulled less than a half hour earlier. Chrysler & Dodge vehicles use the Multi-Displacement System (MDS) and GM has the Active Fuel Management System (AFM). For improved fuel economy, vehicle manufacturers have developed V4/V8 modes. ![]()
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