NefMoto

hi guys
how i can decrease injection time in idle RPM? is this has a separated table in bin file? OR i must change the Lambda or injection table?

in the way, how i can Decrease fuel consumption with tune ecu?
only Lambda and Injection tables are involved for this?(which tables must be changed?)

thanks a lot :)

What ECU?

For vast majority of ecu.
for example BOSCH ME7.4.4 or BOSCH ME 7.4.9 and etc...
i want to find a pattern for decrease fuel consumption for any cars.

Great plan

Make max load request from the throttle pedal 1% at all points.

Jesus Maria....  ::)

It`s simple: first find the "physik off switch"

rofl.


Lower consumption? Idle at 600 RPM lol,until you are constantly stalling.

This will do the trick nicely.

thanks adam.
it's meaning in load table i increase 1% all cells?
i dont know. excuse for my junk question but what's the meaning of your sentence?
can you more describe this issue?

Try it and you'll see.  KFPED set to a flat 1%.

thank you adam.
according to the this topic(http://nefariousmotorsports.com/forum/index.php?topic=58.0 (http://nefariousmotorsports.com/forum/index.php?topic=58.0)), KFPED is: 12x16 -16 bit values, 16 bit axis - Driver Requested Power.
is it true?
if yes, how i can change 16 bit values to 1? in this table some value are very big, such as 29491 or 42598. change all of them to 1? 

Your table isn't defined properly.  It's RPM vs. Pedal position with Z being % load.

i guess.
can i send you my ori dump file and you check it? for once and in next time i promise i can do it myself. or please introduce me a tutorial that help me to file this map. :)  :P

You really don’t see your leg is being pulled? ;)

Reminds me of a guy that wanted to buy my previous turbo project car because he needed the power, but also he planned to commute to work with it and wanted to lean it out mid load down to AFR 17 to make the whole turbo owning economical. Seriously.

You know if you crack the exhaust flange U/S of the O2 sensor it'll read 17+.  Simple.

And this is why it's a good idea to pay at least some attention in high school physics class...

oh maaan. it's seems you was hero in high school too.  ;D
OK. now can you help me? unfortunately i dont remember my high school because i graduated many years ago.  ;)

thanks.

What problem do you have or what are you trying to solve?

Yeah, how about re-visiting the first law of thermodynamics.

i try to decrease fuel consumption. my supposition is i touch this target with decrease injection time(for example 3.5ms for each injector converted to 2.5 ms) of each injector. with this plan i can demonstrate my work is true. so, how i can decrease injection time with ECU remap?
which tables must be change and how?  ???

by the way, Is this scientific?  :-\
if no, what is scientific way for decrease fuel consumption?  ::)

thanks in advance.
you are savior,Adam.

OK.

Good, and after that, pick up a book internal combustion engine BASICS.
The things you're writing here show complete ignorance to how an engine works and also basic physics.

Maybe after you do these things you can come back to this thread and laugh at the things you posted the same way everyone else here is doing right now.

So with this plan, if it works out, are you planning to sell this solution to the whole automotive industry for big $$$, because they were not able to figure it out for the last ~40 years of designing EFI systems and that's why all the cars consume more fuel than strictly necessary?

OK, i suggest you shut your mouth and refresh this page and read other people notices. rather, learn.  ;)
thanks in advance.

really? is this true? i can increase power so increase fuel consumption. why i cant decrease fuel consumption? is this trade off between power and fuel consumption?

i can not sell this solution to big(or small) company. because every body read this topic can learn this trick (if it works out)  8) i believe the open source world :) we can help each other and use all of us :) 

Yeah lol you do not understand.

Arrogance paired with ignorance. Amazing.
Maybe you should run for president.

yes i noob and i dont understand. so help me and introduce me more source and tutorials.
where is my problem? 
by the way, i'm not native in english so it's possible i lose some context.
thanks.

you abuse me and i was angry for this. you could help me not abuse me.
any way, excuse me bro.

You literally need to read how an engine works to understand that what you are proposing is ridiculous and will not get you anywhere. Clearly it's not sufficient when we tell you.
No abuse here.

ok. thanks.
i try to read more about engine works.
so, do you know how i can decrease fuel consumption? do you have any suggestion for me?

YOU CAN'T.

i can't or no one can this?

You cant spend a 10 min to read engine basics and air fuel ratio
Seems like some kind of trolling here but why?

Oh yes you can.

It is possible to do it on a direct injected SI engine with continuously variable intake and exhaust camshaft phasing or a direct injected diesel with VNT turbocharger if they are not optimally tuned from the factory.

On 1.8T you can't.

I refer to the ECU he's talking about, which is not DI.

A modern engine is nearly always optimally tuned for factory.
Optimally for a ratio of emissions and fuel efficiency.
If you throw emissions out of the window, then you can make some small fuel efficiency gains.

Exactly.

In my country I pay over 50% "Eco" tax on every liter of fuel I put in my car, so F*** emissions, I want my engine as efficient as possible.
In some cases, especially with diesel engines, there are quite substantial gains to be had.

thanks bitmap.
in my country gasoline price recently increase 200%! and most car here are pollutant. my car consumption is 12 liter per 60 miles :| 
and i eliminate car Catalytic converter (because its very expensive).
now my car injection parameter is 4.5 ms(whereas in standard car is 3 ms). i want just make some small fuel efficiency gains.
it's possible i lose some HP and it's not important for me.
so, in this topic ( http://nefariousmotorsports.com/forum/index.php/topic,530.0.html (http://nefariousmotorsports.com/forum/index.php/topic,530.0.html) ) most of the talk regarding to lambda operation will directly apply to my car as well?

yes, exactly , we too.

unicornux: don't waste your time.
I tried to improve fuel efficiency on 1.8t and everything I did made things worse.
Best thing you can do is to keep car in best possible working order or buy something newer with more potential for mods in this regard.

Thanks bitmap. Best answer.
And thank to all people who help me in this road.
Thank you so much.

Removing the cat will not affect that (excluding cat heating, before some mouthbreather comments).

i mean that the emissions not important for us.

there are a million random day to day ways your car is going to eat more fuel than the miniscule benefits you'll get tuning the car for fuel efficiency over emissions.

If you wan't to save gas, the best way was already recommended above.

Limit KFPED to 25%

Enjoy your slow waste of time and effort.

No I'm saying if you've removed the cat and your economy has got worse, you've done something wrong.  It should remain the same as stock.