My "Turbo for Mileage" Project
Feb 21, 2011 | 11:23 PM
#11
Staging Lane
Joined: May 2010
Posts: 63
Likes: 0
From: Tucson, Az
I promise, I am not trying to pick apart your post. I am trying to learn as much as I can as well, but isn't this kind of contradictory? Do you mean moderate as in steep hills, and towing? Or highway driving? Because unless you get the truck to burn LESS fuel, it's not going to get better mileage.
Again, I am not trying to be negative at all, just trying to learn. Sometimes it's hard to judge tone in typed words lol.
Again, I am not trying to be negative at all, just trying to learn. Sometimes it's hard to judge tone in typed words lol.
Feb 21, 2011 | 11:39 PM
#12
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
Big RED. to answer your question/statement. The Idea is to tune it with EFILive and control the PE % depending on knock, load etc.. Ill prob have to go SD with the 2 bar Virtual VE table that is stock in the E38 pcm. 3 psi should be able to be reached by 1500-1800 rpm or so WOT. Im guessing I could be around 1 psi at part throttle under moderate load and run just a little richer AFR to compensate. We will be tuning on an All Wheel Load Bearing Dyno to acheive the results we are looking for.
Interested to see how this turns out...
Feb 22, 2011 | 10:02 AM
#14
What I mean is moderate driving at highway speeds and around town. I do not do any towing. No offense taken. I love all the interest in this thread. I'm very open to this idea and if it will work or not. Ill give very accurate info not swayed in either direction as I'm interested in the results also. Ill yet and stay with the maf at first as long as I can control the fueling to my liking.
Feb 22, 2011 | 02:31 PM
#15
If you really want better mpg, dump the 5.3 and replace with a 4.8. Bump the c/r up to 10.5+ and have lots of meth ready maybe even before positive boost pressure. Need a bigger meth tank
. That might give you a nice bump in fuel eco.....probably not 50% though.
. That might give you a nice bump in fuel eco.....probably not 50% though.
Feb 22, 2011 | 02:43 PM
#16
Staging Lane
Joined: May 2010
Posts: 85
Likes: 1
From: Plymouth, MN
Hmmm I think it might be possible but we will wait and see. If your just trying to get better highway mileage couldnt you do that will taller tires or different rear gears. My regal has 2.93's and i can get almost 30mpg's on the highway. If i went to 3.29's my mileage would drop on the highway.
Feb 22, 2011 | 02:52 PM
#17
Mileage is the goal but with a turbo you are also gonna pick up part throttle power and torque which will make the truck even more fun to drive. Besides. The idea was to see if a turbo really can give your better MPG not what is the best way to gain mpg . So the truck will remain factory with the exception of the turbo to prove or dis prove the theroy.
Feb 22, 2011 | 05:46 PM
#19
GFYS and STFU
iTrader: (8)
Joined: Jan 2007
Posts: 13,870
Likes: 4
From: Here and sometimes there too.
I am confident that it will improve the fuel economy of the car, just not sure by how much. This is the first time someones tried it with this intent and set-up for this particular reason. Should prove to be very interesting!! And you seem to know what the limitations and difficulties are gonna be so at least your well informed!
When's the install date already?
When's the install date already?
Feb 22, 2011 | 06:29 PM
#20
The turbo should be here in about a week or so. Waiting for tracking info from STS. Bought and paid for just over a week ago.
Yes. I know the limitations and will tune to make the engine happy. With 3 PSI max it will tune pretty well. I don't think a lot of people understand how much the turbo should help the truck stay in AFM mode. I'm excited to see how it works with AFM. I already have tuned AFM mode to acheive max fuel mileage FYI. Thanks guys for all the replies!
Yes. I know the limitations and will tune to make the engine happy. With 3 PSI max it will tune pretty well. I don't think a lot of people understand how much the turbo should help the truck stay in AFM mode. I'm excited to see how it works with AFM. I already have tuned AFM mode to acheive max fuel mileage FYI. Thanks guys for all the replies!
