Diesel Insights: Towing in the race tune
This is a great video the guys over at Duramax tuner (aka Calibrated Power Solutions) talking about towing with the high 500 RWHP tunes on modern diesels trucks. Personally, I don't like to tow anything over 7K in my 500+ RWHP tune even though I probably can with the built trans. I usually switch between my 450 or 400 RWHP tunes as needed when I am towing over 7k.
It also touches on some of the de-fueling/pull timing parameters built into the stock tune of Duramax's that will lower power output similar to what I said happened in the Freightliner vs Duramax Ike video. All of the diesel manufacturers do this although some don't need to cut fuel as often or as much since they don't advertise such high power levels to begin with and like to advertise more conservative sustained power ratings. Basically, some may advertise the best their engine can achieve in perfect scenarios at sea level and will reduce power as barometric pressure increases(go up in altitude). While others may advertise what you will get all the way up to say 10k elevation.
So just because that new diesel of yours says it makes 440+ hp at sea level, does not mean it is able to make that all the time and the nannies built into the programming will cut power to keep you from harming the engine. As they say in the video, this could clearly be seen in aftermarket gauges like the EDGE CTS2 monitor because you will have less fuel pressure available.
DIESEL INSIGHTS: TOWING IN THE RACE TUNE
It also touches on some of the de-fueling/pull timing parameters built into the stock tune of Duramax's that will lower power output similar to what I said happened in the Freightliner vs Duramax Ike video. All of the diesel manufacturers do this although some don't need to cut fuel as often or as much since they don't advertise such high power levels to begin with and like to advertise more conservative sustained power ratings. Basically, some may advertise the best their engine can achieve in perfect scenarios at sea level and will reduce power as barometric pressure increases(go up in altitude). While others may advertise what you will get all the way up to say 10k elevation.
So just because that new diesel of yours says it makes 440+ hp at sea level, does not mean it is able to make that all the time and the nannies built into the programming will cut power to keep you from harming the engine. As they say in the video, this could clearly be seen in aftermarket gauges like the EDGE CTS2 monitor because you will have less fuel pressure available.
DIESEL INSIGHTS: TOWING IN THE RACE TUNE
