optimal MPG mods

[michael hurd]

I like my Civic's mileage as well...

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[ccreddell]

My wife uses the Honda mod-although its an older model that I need to replace last month.....

 

[K15 Blazer]

its only a year older than mine! but I have 325K miles. I forget the brand of fan but I got it on ebay. its red and puts out 3600 cfm. it was around $200. I messed with my timing a lot and ran my laptop with my truck to see what was happening. It can be advanced a little bit with no chip/tune, with chip/tune you pretty much should set it back to 0*. To much advance under load will make the knock sensor retard the timing.

Yes, getting my laptop plugged in would be AMAZING please message me and help me do this!!!!
At least say what you had to buy for it

 

[Blue95]

Yes, getting my laptop plugged in would be AMAZING please message me and help me do this!!!!
At least say what you had to buy for it

You need an ALDL cable, 1994 you can still use it on, download WinALDL.

http://aldlcable.com/

http://winaldl.joby.se/


YOu can set timing with a timing light, advanced 4* is good too for a little boost.

 

[TylerZ281500]

tunerpors is free and a great program for datalogging, you can donate if youd like as well

 

[ChevyDave]

So you buy the cable and download the program and that's it? And this is for pre-obd 2 right.

 

[TylerZ281500]

then you can record what your trucks doing and modify files, after that you need to burn a chip so you need software for that, once you have a chip burnt, then buy a g1 adapter from moates and plug the chip in and do it again till your happy with the results and everything looks perfect

 

[Tinkerinmatt]

There is so much stupidity in here I can't keep myself from commenting, like when idiots argue that increasing minimum wage is a good thing. I am a mechanical engineer by degree and career.

The air dam is to move air around the vehicle instead of under it and create a low pressure zone below the truck to draw air through the radiator, reduce lift, and reduce drag. There is a point where an air dam is not doing anything for any of those after being so high off the ground, you can't create a low pressure zone when the area is too big. I'm sure you hillbillies watch NASCAR, notice how low the chin spoiler is. Look at the 05-06 tahoes, they got a cow catcher attached below the normal air dam. Look at the new F series trucks, huge air dam. On a stock height gmt400, the air damn DOES help reduce drag, it was designed by many engineers to do so on that stock truck. When you start screwing with the height of your truck, you throw all of their research and development out the window.

The equation for how much horsepower it takes to move a vehicle down the road at a certain speed involves coefficient of drag and frontal surface area. If you put a piece of plywood on the front of a lifted truck your frontal surface area increases. Coefficient of drag, 1 being a flat surface in the wind, a vette is about 0.28-0.3, our trucks which have the aerodynamics of a washing machine being 0.5 probably. Craftsman truck series, look how low those air dams sit. They are not racing stock height trucks.

 

[TylerZ281500]

he is actually right but stating your an engineer and being a ***** will get you 0 appreciation around here, most engineers are life stupid, well it looks good on paper so it must work, but then in reality its failure prone. fortunately this isnt one of those cases and on a stock truck your correct it makes a different but majority arent stock

 

[Blue95]

There is so much stupidity in here I can't keep myself from commenting, like when idiots argue that increasing minimum wage is a good thing. I am a mechanical engineer by degree and career.

The air dam is to move air around the vehicle instead of under it and create a low pressure zone below the truck to draw air through the radiator, reduce lift, and reduce drag. There is a point where an air dam is not doing anything for any of those after being so high off the ground, you can't create a low pressure zone when the area is too big. I'm sure you hillbillies watch NASCAR, notice how low the chin spoiler is. Look at the 05-06 tahoes, they got a cow catcher attached below the normal air dam. Look at the new F series trucks, huge air dam. On a stock height gmt400, the air damn DOES help reduce drag, it was designed by many engineers to do so on that stock truck. When you start screwing with the height of your truck, you throw all of their research and development out the window.

The equation for how much horsepower it takes to move a vehicle down the road at a certain speed involves coefficient of drag and frontal surface area. If you put a piece of plywood on the front of a lifted truck your frontal surface area increases. Coefficient of drag, 1 being a flat surface in the wind, a vette is about 0.28-0.3, our trucks which have the aerodynamics of a washing machine being 0.5 probably. Craftsman truck series, look how low those air dams sit. They are not racing stock height trucks.

And to think I wasted my time reading your post and trying to help you out with you new Yukon.

Way to state everything I already did, but be a complete ***** right out of the gate. I know some mechanical engineers at work, common sense eludes them and an actual understanding of anything mechanical that is real not just in CAD.