Timing spikes like this result in injector rattle and drivability issues - not to mention that excessive low-rpm timing is hard on connecting rods. This timing map showcases an aggressive ramp up in timing (in a diesel engine, “timing” refers to start of injection) on an aftermarket programmer. Calibrators simply didn’t have access to all of the tables within the ECU, so they could only change a handful of parameters in the tables they did have access to. Tuning files found on programmers from the early days of diesel performance were a bit barbaric, but they weren’t that way on purpose. Harsh Timing Advance (Aftermarket Programmer) Instead of Duramax-powered HDs that rattle, smoke and suffer from poor drivability, we now have trucks that are quiet, run clean and drive like stock until you hit the go pedal. However, once it was released for the 6.6L Duramax V8 it caught on like wildfire.Īs soon as tuners began to perfect the ins and outs of the software, it quickly became the preferred method of tuning GM trucks, especially those making big horsepower, courtesy of larger injectors, turbochargers and common-rail pumps. The Tool That Started It Allīefore delving into the diesel market, EFI Live made it big in the Corvette and Camaro tuning world in the late ‘90s. This is why most enthusiasts (including us) prefer to have custom ECU and TCM calibrations built by reputable EFI Live tuning professionals, such as, Adrenaline Truck Performance, Hardway Performance and Silver Bullet Tuning, to name a few.įollow along as we illustrate several ways in which EFI Live can improve the performance, drivability and reliability of a Duramax or Cummins diesel. While EFI Live is extremely powerful, it can also be downright destructive in the hands of a novice or reckless tuner. Last but not least, EFI Live has the ability to data log any parameter(s) you choose, making this software that much more invaluable. There is literally a table for everything. You can adjust timing, pulse width, rail pressure, cancel or revise pilot and post injection events, create a linear power curve, eliminate low-end smoke, limit boost, limit speed and anything else you can think of. No other tuning platform allows you to view and change so many different parameters. Available for ’01-‘16 Duramax-powered GM’s and ‘06-‘16 Cummins mills, EFI Live makes it possible for the end user to electronically infiltrate the factory ECU and TCM to access and alter data. EFI Live Tuning: The Diesel Industry’s Most Powerful Tuning ToolĮven though dozens of tuning products exist in the diesel aftermarket, none of them are as powerful as EFI Live software.

Best programmer for 6.6 duramax