okay so i was wondering if someone could explain this to me. When you tune an engine, lets say 160hp (idealistically), your engine has another 160 on top of the 365 i think is what they put (LML) out at the wheels. does all of this extra power go to the transmission no matter what, or is it only that much when its WOT? I know there are power ranges on the RPM such as 2300 is where the max hp is made per-say, so if anyone could explain this to me it would be appreciated.
DURAMAXED OUT
its going to be scaled just like your stock tune, that max power wont be achieved until the engine itself is making max power.
correct
your engine and trans will see increased power through the power band, but not until it is placed under a load will the full power be realized.
in other words, a 160 hp tune at 1/2 throttle may only increase your hp by 30.
your engine and trans will see increased power through the power band, but not until it is placed under a load will the full power be realized.
in other words, a 160 hp tune at 1/2 throttle may only increase your hp by 30.
Not trying to be a smart ass here so hopefully it doesn't sound like that.
Have you ever seen a dyno sheet? If not it maybe do a google search. That will give you an idea of the power curve on a vehicle. Of course all are slightly different.
Have you ever seen a dyno sheet? If not it maybe do a google search. That will give you an idea of the power curve on a vehicle. Of course all are slightly different.
2011 LML Duramax Dyno | Diesel Performance Tuners
H&S claims 360 so thats what i based off of. What am i looking for on the dyno sheet? the peak of the curve?
H&S claims 360 so thats what i based off of. What am i looking for on the dyno sheet? the peak of the curve?
peak is where the most power is made, where the curve start drastically going up is where they pegged the throttle.
well on that dyno its a +130 at the wheels, but different trucks have different responses, some may produce more than others.
Here is a good graphical representation
![Image]()
The RPM is the horizontal (bottom) axis and the HP is the vertical (left) axis. As you can see, the HP produced by the motor varies based on the RPM of the motor, and in this case, WOT isn't necessarily a sweet spot.
In this example, about 8200 RPM is the sweet spot and the stock motor is making about 32HP. Once they did the mod, the sweet spot stayed at about 82000 but the HP jumped to 35hp.
Here is a Duramax dyno sheet
![Image]()
interestingly, this shows us that the water/methanol injection actually hurts your HP until he gets to about 2450 RPM and the torque until he gets to about 2250 RPM.
AS you can see, the HP your truck makes and the how the mods affect your truck greatly vary based on how the engine is used. You can always assume that advertised HP and torque levels are going to be in the sweet spot and will reflect a "best-case scenario".
The RPM is the horizontal (bottom) axis and the HP is the vertical (left) axis. As you can see, the HP produced by the motor varies based on the RPM of the motor, and in this case, WOT isn't necessarily a sweet spot.
In this example, about 8200 RPM is the sweet spot and the stock motor is making about 32HP. Once they did the mod, the sweet spot stayed at about 82000 but the HP jumped to 35hp.
Here is a Duramax dyno sheet
interestingly, this shows us that the water/methanol injection actually hurts your HP until he gets to about 2450 RPM and the torque until he gets to about 2250 RPM.
AS you can see, the HP your truck makes and the how the mods affect your truck greatly vary based on how the engine is used. You can always assume that advertised HP and torque levels are going to be in the sweet spot and will reflect a "best-case scenario".
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