12 mpg 1000cc injectors
12 mpg 1000cc injectors
Hey guys I'll post my fuel maps injector scaling latency and a log to help fill in pieces of the puzzle but I avg 12 mpg on my evo x MR on normal road driving I'll do a single 3rd gear pull every now and then but from the other threads on here it seems ridiculous to have that low of MPG the only thing I haven't done is check for a stuck injector. Is there any reasons that you guys know of that might explain my low MPG?
If I was guessing maybe you drive it harder than you think. Getting into boost often will drop you MPGs significantly. This doesn't even have to be long pulls, just accelerating to 50-60mph quickly will effect MPGs if you do it every time you take off. The other thing you could check is like tire pressure and stuff but I don't think that would explain a ~10mpg difference.
A log of cruise and a pull would be slightly helpful as well just to look for any oddities in there.
If your AFR is good cruising, then you should be getting reasonable mileage. If an injector was stuck, it would be rich, if it was tuned too rich, it would be rich, etc.
If I was guessing maybe you drive it harder than you think. Getting into boost often will drop you MPGs significantly. This doesn't even have to be long pulls, just accelerating to 50-60mph quickly will effect MPGs if you do it every time you take off. The other thing you could check is like tire pressure and stuff but I don't think that would explain a ~10mpg difference.
A log of cruise and a pull would be slightly helpful as well just to look for any oddities in there.
If I was guessing maybe you drive it harder than you think. Getting into boost often will drop you MPGs significantly. This doesn't even have to be long pulls, just accelerating to 50-60mph quickly will effect MPGs if you do it every time you take off. The other thing you could check is like tire pressure and stuff but I don't think that would explain a ~10mpg difference.
A log of cruise and a pull would be slightly helpful as well just to look for any oddities in there.
Heres a loink to some cruise logging from last night and a bit of idle while i went into a store.
https://docs.google.com/spreadsheets...usp=drive_link
I can't access the file but I think the best advice for you would be to fill up the tank and drive it while intentionally staying out of boost and then see where the MPGs end up.
I think that trying to eliminate the variable of being in boost would be helpful to try and determine if there is a real issue or not.
I think that trying to eliminate the variable of being in boost would be helpful to try and determine if there is a real issue or not.
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I was actually trying to send my log from driving home from work last night so you guys can tell me if foot is just heavy or if i have other issues but the app didnt like my google drive file
Heres a loink to some cruise logging from last night and a bit of idle while i went into a store.
https://docs.google.com/spreadsheets...usp=drive_link
Heres a loink to some cruise logging from last night and a bit of idle while i went into a store.
https://docs.google.com/spreadsheets...usp=drive_link
Last edited by Nickslam2010MR; Mar 29, 2024 at 01:10 PM. Reason: adding cruise log
I can't access the file but I think the best advice for you would be to fill up the tank and drive it while intentionally staying out of boost and then see where the MPGs end up.
I think that trying to eliminate the variable of being in boost would be helpful to try and determine if there is a real issue or not.
I think that trying to eliminate the variable of being in boost would be helpful to try and determine if there is a real issue or not.
I did try to see if this was a heavy foot problem before asking too many questions.
At this point I am kind of out of ideas. The AFRs look good and if you stayed out of boost and still got 12, I don't know what to tell ya.
Well thanks for looking I'm running another tank like a granny to see if it's worth it
I would expect you to be able to get 20-ish mpgs driving nice on 91/93, thats about what my 9 will do on a road trip.
Keep the post updated, I am really curious what the issue is.
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