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Throttle body Spacers for 2011 Duramax

7K views 37 replies 19 participants last post by  2500-HD 
#1 ·
I have been trying to see if adding a throttle body spacer will actually add a bit hp and add the 2-4mpg which they say they do, anyone with knowlege know the truth?
I do a ton of driving and would like to gain a few more mpg if possible, but I'd hate to waste my money on something which is a total farse, & since a ton of people on the site are very mechanically inclinded, something which I am not, many of you should know, hopefully anyway.
any and all help in this regard would be a great help, thank you.

PS, I am also kind of interested in the Air Dog system, and if you happen to know about the advantages to this, i'd also appreciate your help in this matter, although I am now going to do some searching in here about this system.
My main question is about the throttle body spacer as I couldn't find anything on here thus far, but I am going to continue looking at both of the above.
Again, thank you:help
 
#37 ·
 
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