Mileage and turbo.
IF driven like a granny off the line on flat ground for let's say 100miles & cruise control on.
Yes the turbo would make slightly better mileage. For that 100 miles. How much better hard to say.

Here's the glitch.
No one ever!!!!! drives the truck the same once you put a turbo on it.

It's more fun to drive. ( that's why the turbo was installed more power more fun.)
Your right foot will hit the throttle harder and more often.

1) good boost blast will take any saving you thought you made and send that out the tail pipe.

I've been doing these you over 11 years. And not once hace I ever gotten a phone call gas mileage increased comparing tank fill up to tank fill up.

 

That's more along the lines of what I was thinking. For instance on the highway at around 70mph I sit at around 2500 rpm. I'd imagine the truck would be making a few pounds of boost at that rpm. I figured that the engine wouldn't need to downshift or anything to keep the truck moving at the same rate, but I don't know what I was thinking about increasing mileage. With increased air you have to add fuel duh!

 

So you are giving up the on the "better mileage with a turbo" quest? I hope so, as thats fantasy.

Simply put, it takes more fuel to make more power; the more power you make the more fuel you burn.

Boost depends on more than engine rpm, it actually depends mainly on "engine load" (which is basically airflow*heat). 2500rpm at 10% throttle isnt much air or load compared to 2000rpm at wide open throttle. If you are in boost during cruise your mileage is going to tank. If you dont fatten it up under boost, you will melt stock pistons fairly quickly.

 

no, your mpg will drop once you install the turbo.

 

Yeah those dreams are in the drain! However I'm still probably going to turbo it and possibly look for a little gas sipping beater car to run little errands in.

 

That is a plan that has a much better chance of working out!

 

I've had pretty good luck with one of these to help my fuel mileage.

GAS SAVER - SKU2548

 

Hey. Finally got my truck tuned with the on3 kit. I've driven it for around a week now and I went from 12.2 mpg's to right around 17. My trucks lifted and sitting on 35's and I wasn't expecting any increase because I was thinking more power more fuel less mileage. But with the engine having more power it turns everything easier so it actually is saving me some mpgs. I think any of the kits would be good. I'm happy with the on3 kit for now. I welded an extra support that bolts to the cylinder head to help with bumps and stuff but I think it would have been fine the other way as well. But any of the systems will be freaking sweet. I love it and it's like a whole new animal under the hood. Plus the extra gas mileage makes up the cost for running premium. Good luck to whatever you decide to do!

 

Damn that's a pretty big increase in mileage. I think I'm just going to turbo my truck and roll the dice. If the mileage doesn't increase so what. If it does increase that will just be icing on the cake. I've got to do a little more research on what kit I want to go with. Right now I'm thinking using the KB racing hot side and Denmah cold side kit. Did you keep your MAF sensor in your kit? And did you have it tuned with hp tuners?

 

The kit was designed to use speed density and cut out the MAF all together but I kept it. all I did was put it right in front of the intake manifold. I was skeptical with it being right there but it actually worked very well there from what my tuner told me. The tuner suggested a 2bar speed density tune also but until I go crazy big on horse I'm just sticking with how the truck was made. That way you don't have to cut and splice in a different IAT sensor etc. I'm not sure which program he uses. But I have to stop by after work today to adjust my shifts a little firmer so I'll ask him then. And the better mpgs were cruising at 75ish. If I'm romping on it gas mileage is about the same as if your romping on a regular NA engine so I'm happy with it. I drive to and from Colorado a lot and this extra bit on the highway will save me a ton of cash along the way