i miss my 03 monte. i would get 34mpg with the 3400. i am lucky to get 22-23mpg average with my 2007

 

where it is honestly i dont remember...... I really wouldn't worry too much about it. Another thought is to sea foam your engine. Did that to mine and i'm sure it helped some. 34mpg out of the 3400?? wtf lol, what is wrong with my car that i only get 26 at best, must be how i drive. And you dont get more than 23mpg highway? even with dod

 

should be on the fuel line near the tank somewhere. usually pretty easy to install

 

34 mpg from the 3400? wtf lol, how am i getting 26 at best from the 3100. Must be how i drive or a have a car problem. You dont get more than 23 highway with the monte? even with dod?

 

DOD/AFM is kinda of a joke. you can get 26-28 on the highway but as soon as you hit the city it guzzles the gas down. it averaged to about 22 on mine so far.

i am going to get AFM disabled whenever diablo sport tuners start to support my ecu.


my 3400 got awesome mileage. it wasnt the best running motor but the gas mileage made up for that. it was nice owning it during college so the drive wasnt that bad everyday.

 

Well afaik dod was mainly intended for highway anyway. I'd expect it to gobble gas in the city being a V8. 26-28 highway is great for a v8 though

 

dod will come on in the city alot too but it is pretty annoying. it will come on in 3rd gear as long as your in drive.

it also can cause oil comsuption. gm came out with a fix but all it consists of is a oil pan gasket.

 

Oil consumption I've seen alot of Posts about it and wondered what the cause was.