Does anyone know how to change the ratio of the cvt? I have a 2015 se 2.0 awd. I've noticed that the optimal speed is around 40mph. Is like to be able to raise that so that 50 is the optimal speed to go. At 70 mph I'm lucky to read 20mpg average. Any way to change that?

 

You wouldn't change the gear ratio of the cvt you would have to change the gearing in the front and rear differential. You need to do both since you have the awd, otherwise when you put it in awd and your front wheels spin slower than your rears something will eventually go bang.
The gas savings will take a long time to pay off the cost of changing the differentials out, not to mention I don't think anyone makes aftermarket gear sets for the OS.
Also, I think part of the reason for the gearing is so that at highway speeds (~70mph) the rpms are in the sweet spot of the power band so you have good power while on the highway. I'm not sure if you noticed but IMO these engines (2.0 and 2.4) don't make hardly any power or torque until about 3k rpm, which is roughly where you're running at 70mph.

 

Well said... OP, I don't know about the OS, but have you looked into fluids for the trans and diffs--something that wont tear them apart ( EVO) but will reduce friction and help drive MPG.. just a thought.

 

Zombie,
Instead of modding your CVT, ECU or any other parts of the vehicle to try and improve the MPGs, perhaps it's best to just give it some time to break-in.

Have you read my detailed thread on "Best MPGs for AWD"? Check it out >
https://www.evolutionm.net/forums/ou...rt-se-4wd.html

 

• I began to read that post a few days ago but its 28 pages long. I never made it to the part where you actually started modding and talking about the difference. I have at times saw up to 34 mpg on the read out. when im doing 40 mph for a good bit. But i have to toss in some 70mph that i usually see around 20mpg. I calculated 28.6 mpg average on my last tank of gas with mixed driving and about 40 miles of towing what i would figure to be close to 1k lbs. Right now im all stock. What did you find to be the best combination?
• If it means changing the drive gears that would be too much work. I was thinking more along the lines of changing a computer setting that tells the cvt what the optimal rpm range is. Sorta like using a power commander to give me a little less fuel at 60-70 and lower the rpms. I dont need the passing power as im un raral ohio with very little traffic and merging.

 

Took this after my morning commute to work. This is about 8 miles at 55 and 7 miles under 40. All highway with a couple lights

 

i'm constantly amazed at anything over 20mpg, because my Evo gets 16mpg (all city driving, hardly ever sees the highway).

 

I've noticed that even though the dashboard meter may be reading a low MPG, it doesn't effect the overall fuel mileage that bad. Keep checking it by actually calculating it and I think you'll find that you're spot on for what it should be getting. I'm not sure what part of SE ohio you're in, but if it's anything like the central east part where I'm at, there's plenty of hills to contend with so I never anticipate getting what the O.S. is rated for.

 

My overall rating comes out fine. i dont deal with many hills on my work commute but we have a good bit. Im not really concerned with my average mpg. I think its right on par with where it should be stock. but for those longer trips it would be nice to be able to plug in something to adjust my fuel. On my bikes I use a power commander to give me lots of love in all the right places when im going to go zip around some curves but tune it down when im commuting and dont need it. This would be awesome for my sport. Doesnt look like anything like that is out there? I thought maybe something had been made for the lancer similar to that.