Getting Best MPG during Cruise
you are really dying for better fuel consumption hey 
generally:
1) make more power from the fuel you put in - ie MIVEC or IgnitionAdv changes
2) put less fuel in (ie lean cruise) - but this will require MORE IgntionAdv again otherwise you will loose power from the slower burning mix
I have yet to see any empirical proof that #2 works, feel free to do some tests for us
generally:
1) make more power from the fuel you put in - ie MIVEC or IgnitionAdv changes
2) put less fuel in (ie lean cruise) - but this will require MORE IgntionAdv again otherwise you will loose power from the slower burning mix
I have yet to see any empirical proof that #2 works, feel free to do some tests for us
I tested both closed/open loop cruise and ignition changes for over a year on my personal Evo 8. Keeping it in closed loop and tweaking ignition produced better MPG on my Evo 8.
On the 10's and 9's, I've seen better mpg with ignition and mivec cruise changes.
- Bryan
you are really dying for better fuel consumption hey
generally:
1) make more power from the fuel you put in - ie MIVEC or IgnitionAdv changes
2) put less fuel in (ie lean cruise) - but this will require MORE IgntionAdv again otherwise you will loose power from the slower burning mix
I have yet to see any empirical proof that #2 works, feel free to do some tests for us
generally:
1) make more power from the fuel you put in - ie MIVEC or IgnitionAdv changes
2) put less fuel in (ie lean cruise) - but this will require MORE IgntionAdv again otherwise you will loose power from the slower burning mix
I have yet to see any empirical proof that #2 works, feel free to do some tests for us
I figured out the that the stock 600cc injectors are about 11% scaled down to about 532. If you scale the DW 800cc injectors by 11% you should get about 713 in ECUFLASH. I will try to rescale my car for 713 and see if I net any better gas mileage.
I am thinking that 770 is too high and you need to lower the latency about .25 @ 14v to get your car into +/-5% cruise and idle.
If it dosent work, well then I can go back to my now working scaling and latency. I will do some testing today.
I am beginning to think that scaling and latency has a affects fuel consumption. I know when I was running 696 scaling and 14v @ ~1.400 for my DW800cc I would get 24-25mpg on the highway with a setting my injectors to 770 and about ~1.200 latency @ 14V I get about 18-19.5mpg. No changes to MAF or Ignition or any changes to my High Octane map in the cruise range.
I figured out the that the stock 600cc injectors are about 11% scaled down to about 532. If you scale the DW 800cc injectors by 11% you should get about 713 in ECUFLASH. I will try to rescale my car for 713 and see if I net any better gas mileage.
I am thinking that 770 is too high and you need to lower the latency about .25 @ 14v to get your car into +/-5% cruise and idle.
If it dosent work, well then I can go back to my now working scaling and latency. I will do some testing today.
I figured out the that the stock 600cc injectors are about 11% scaled down to about 532. If you scale the DW 800cc injectors by 11% you should get about 713 in ECUFLASH. I will try to rescale my car for 713 and see if I net any better gas mileage.
I am thinking that 770 is too high and you need to lower the latency about .25 @ 14v to get your car into +/-5% cruise and idle.
If it dosent work, well then I can go back to my now working scaling and latency. I will do some testing today.
The 10's can be a pita in this way compared to the 8/9's since the LTFT is so sensitive and effects open loop fueling as well and is way too sensitive about it.
Of course it has an effect if the car has to keep adding fuel to get the trims inline. It will always overshoot with too much fuel, then take fuel out, it's a downward spiral.
The 10's can be a pita in this way compared to the 8/9's since the LTFT is so sensitive and effects open loop fueling as well and is way too sensitive about it.
The 10's can be a pita in this way compared to the 8/9's since the LTFT is so sensitive and effects open loop fueling as well and is way too sensitive about it.
Here comes the fun of rescaling everything again.
Looks fuel trims look terrible.
STFT is within +/- 5%
LTFT IDLE is -1%
LTFT CRUISE is -12.5%
LOL , I need to adjust them.
Before I had it at 770 and latency lower and I was within these values:
STFT +/-6%
LTFT IDLE + between 1-5%
LTFT CRUISE +/- 2-3%
STFT is within +/- 5%
LTFT IDLE is -1%
LTFT CRUISE is -12.5%
LOL , I need to adjust them.
Before I had it at 770 and latency lower and I was within these values:
STFT +/-6%
LTFT IDLE + between 1-5%
LTFT CRUISE +/- 2-3%
Looks like your 770 scaling is much more inline
Go back to 770 and add a little bit more latency
hmmm, well I had considered getting another turbo once money got a little better so I am just doing research now. Would I just be better off getting a TBE UICP IC drop in filter, etc and get better mileage that way? Less restriction, so I would think it would help maybe a few mpg.