Tuning the Diablo
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Joined: May 2006
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Tuning the Diablo
I live down in Houston and have installed the diablo tuner on my '01 4x4 super crew. I am getting around 11-13 MPG. i recently took a trip the new mexico though and got around 16 MPG. to me this means my truck is set up for a thinner air. what parameters should i play with to tune for a thicker air?
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Joined: Jul 2001
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From: South Kitsap County, WA
It's hard to say anything can be done without a program and see mode. There are many factors you can look at. Each truck perfroms differently and Diablo made a general tune. To tell you the truth, with a stock truck, even a mildly modded truck, I wouldn't touch a thing. However you can play with one parameter until you find a good spot then move along to the next... It's a long drawn out process if you do it tank to tank and you only find 1/2mpg when you're done... if that.
When driving cross country your maintaining a constant speed a lot longer than just around the beltway, back and forth between destinations. That'll improve the mileage some. I usually get 13-14mpg driving 50/50 commuting, but on a trip that I spent 90% of the time at 65-75mph - I got 17mpg. I can attribute it to the tune or the tail wind... any number of things. What changed for you over the normal daily drive?
The temperature and humidity both play a factor.. you knew that when you commented about thin and thick air. The heat and/or humidity of Houston actually can make any vehicle perform like poo... but that's why modern vehicles have all sorts of sensors on the intake to gauge that air coming in.
IMO, I think you drove the truck on a long trip without a whole lotta stops and saw what it's capable of. You won't see those numbers again until you take another trip like that.
-Kerry
When driving cross country your maintaining a constant speed a lot longer than just around the beltway, back and forth between destinations. That'll improve the mileage some. I usually get 13-14mpg driving 50/50 commuting, but on a trip that I spent 90% of the time at 65-75mph - I got 17mpg. I can attribute it to the tune or the tail wind... any number of things. What changed for you over the normal daily drive?
The temperature and humidity both play a factor.. you knew that when you commented about thin and thick air. The heat and/or humidity of Houston actually can make any vehicle perform like poo... but that's why modern vehicles have all sorts of sensors on the intake to gauge that air coming in.
IMO, I think you drove the truck on a long trip without a whole lotta stops and saw what it's capable of. You won't see those numbers again until you take another trip like that.
-Kerry
Last edited by kspilkinton; Jun 2, 2006 at 05:08 PM.
