DIY ECU Flash

pwrwagn · **Joined:** Mon Jul 22, 2013 2:40 am **Posts:** 192

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

disjaukifa · **Posted:** Sun Apr 20, 2014 9:20 pm

pwrwagn wrote:

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

If this works would you be willing to do the same thing to the 808 map as well?

-Grant

pwrwagn · **Joined:** Mon Jul 22, 2013 2:40 am **Posts:** 192

disjaukifa wrote:

pwrwagn wrote:

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

If this works would you be willing to do the same thing to the 808 map as well?

-Grant

Only if it accomplishes what I want to happen... That being better fuel economy. I'm mostly after that. I'm going to have someone modify mine for no EGR and no FCV, as well. Then, I need to test it for a while, in terms of fuel economy, etc.

I will probably have to save up and get a pyrometer installed, as well, so I can track the exhaust temps. I don't mess with anyone else's until I have a good handle on what the motor likes.

disjaukifa · **Posted:** Sun Apr 20, 2014 11:38 pm

pwrwagn wrote:

disjaukifa wrote:

pwrwagn wrote:

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

If this works would you be willing to do the same thing to the 808 map as well?

-Grant

Only if it accomplishes what I want to happen... That being better fuel economy. I'm mostly after that. I'm going to have someone modify mine for no EGR and no FCV, as well. Then, I need to test it for a while, in terms of fuel economy, etc.

I will probably have to save up and get a pyrometer installed, as well, so I can track the exhaust temps. I don't mess with anyone else's until I have a good handle on what the motor likes.

That makes complete sense, I've been after the same thing, I'm testing an ECO tune for Yeti now, so far its been really impressive, even with my afternoon adventure today! Going to get almost 280 miles on the first 1/2 tank of diesel, really wish I had a linear fuel gauge though . . .

-Grant

pwrwagn · **Joined:** Mon Jul 22, 2013 2:40 am **Posts:** 192

disjaukifa wrote:

That makes complete sense, I've been after the same thing, I'm testing an ECO tune for Yeti now, so far its been really impressive, even with my afternoon adventure today! Going to get almost 280 miles on the first 1/2 tank of diesel, really wish I had a linear fuel gauge though . . .

-Grant

Oh, man, don't we all.

pwrwagn · **Joined:** Mon Jul 22, 2013 2:40 am **Posts:** 192

I have my stock and modified .files right here. The version I have has not yet been run...

The .bin files are the firmware.

http://farfromhome.us/served/

Please, note: This webserver is downstairs by my tv and I'm having some network issues with a bad wireless device that keeps locking up, so now and then it might not be available.

Yeti · **Posted:** Mon Apr 21, 2014 4:31 am

I have see your tune,question , why you have lowered the first 3 map ?

rail pressure ......do not make sense for me, the second rail pressure I think is the pressure when is in recovery

Egr , you only open the FCV always in a shot down too and do not touch the egr function

gas pedal , is too low , and you need to touch the other two map that limit it

engin limiter can go

other map I can't understand the change you do

turbo can go , but you can do well

but for the first map you do is a great step

Yeti · **Posted:** Mon Apr 21, 2014 6:19 am

if you can't do an egr off and fcv off , send me your email , I'll do it for you

pwrwagn · **Joined:** Mon Jul 22, 2013 2:40 am **Posts:** 192

Yeti wrote:

I have see your tune,question , why you have lowered the first 3 map ?

Those looked like the only three "operating conditions" maps. The point was to remove the valley in the midrange. I don't think it needs all that extra advance on the high end. The static map has a rather steep rise in advance at higher rpm as well.

Quote:

rail pressure ......do not make sense for me, the second rail pressure I think is the pressure when is in recovery

I don't know what you mean. The rail pressure maps... One is constant, one is limit, and the other looks like the operating conditions map. I only modified the one that looks like the operating conditions. Is that wrong? I bumped the rail pressure up only in a small area around cruise. This has the effect of a shorter injection period being enough for the fuel you need - it burns it earlier in the rotation. That's why no big bump in timing.

Quote:

Egr , you only open the FCV always in a shot down too and do not touch the egr function

Then I don't understand the EGR function.

Quote:

gas pedal , is too low , and you need to touch the other two map that limit it

I'll need more explaining on that one, then. I thought I understood what the map meant.

Quote:

engin limiter can go

other map I can't understand the change you do

turbo can go , but you can do well

but for the first map you do is a great step

We'll have to discuss these further.

Squeeto · **Posted:** Mon Apr 21, 2014 10:25 am

disjaukifa wrote:

pwrwagn wrote:

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

If this works would you be willing to do the same thing to the 808 map as well?

-Grant

If you become the tester of this, maybe you should also consider a pyrometer?

pwrwagn wrote:

More boost reduces emissions, but decreases economy.

I know that more air needs more fuel but don't you get where you want to be with less pedal? Thus better economy.

disjaukifa · **Posted:** Mon Apr 21, 2014 10:28 am

Squeeto wrote:

disjaukifa wrote:

pwrwagn wrote:

Ok, so I've modified mine a bit...

I have total fuel less than the 811 1.02 "hot tune", the torque limiter is higher, though. I also reprogrammed the boostXrpm 1,2,3 maps to be the same, without the massive trough in them.

I upped the part throttle rail pressure a little between 1600 and 2800 (not full throttle).

I used the torque limiter maps from the Hot tune as a guide. I have higher midrange, lower bottom and high rpm.

Wow, it rocks. It effortlessly runs along at cruise now, where you used to have to push it.

I dropped the 3600 and up advance way back to a little over the lower speed values.

So, we'll see how the fuel economy goes. I also need to study the part throttle advance map and "clean it up". It's crude and rough right now. I'll fill it up and see if I can get 80 miles on it in a couple days.

If this works would you be willing to do the same thing to the 808 map as well?

-Grant

If you become the tester of this, maybe you should also consider a pyrometer?

Yeah I was thinking the same thing, looking into it now actually.

-Grant

Yeti · **Posted:** Mon Apr 21, 2014 10:33 am

First , I understand now the why you have changed the first 3 maps

2nd the first rail pressure map is normal operating pressure , and the 2nd rail pressure map I think is a security map when the fuel is to hot , I know , if the fuel temp raise , the ecu lowering the pressure for cooling , and this map seem that thing , is to low for our engine , for the modify you have do , I think ..but not sure I have understand you , but different language is a limit especially in technician terminology , the limit pressure map are two in your map one is static at 1600 and other is variable and these you find at the end of the map

3rd the gas pedal map is a request of torque in base of pedal position , if you increase it you have a well response , tha map 1/2 is the first limiter and map 2/2 is the second limiter , for modify it you can start at the max value increasing the torque , eg if you do a 450 nm of torque in engine and on the gear limiter torque , you must doing the same value on the pedal , look my tune and compare with an original , you can understand well

Marco

Squeeto · **Posted:** Mon Apr 21, 2014 11:30 am

lostFinn

We need to find the FCV elimination part to finish the 809 EGR delete bin that you sent me.

I see EGRs at e1480 and e2144, hysteresis at e1f3c and e1fa2 but no FCV.

Any ideas guys? I had a look but couldn't see it where I was expecting it to be.

Yeti · **Posted:** Mon Apr 21, 2014 12:32 pm

FCV is at 0E1480 the hysteresis is right , but the egr is the next map at 0E2140 , put the FCV at max value :wink:

Squeeto · **Posted:** Mon Apr 21, 2014 2:14 pm

Yeti wrote:

FCV is at 0E1480 the hysteresis is right , but the egr is the next map at 0E2140 , put the FCV at max value :wink:

So you need to max the values of FCV for the 809 rather than zero like it is done with the 808?

lostFinn · **Posted:** Mon Apr 21, 2014 2:40 pm

Squeeto wrote:

Yeti wrote:

FCV is at 0E1480 the hysteresis is right , but the egr is the next map at 0E2140 , put the FCV at max value :wink:

So you need to max the values of FCV for the 809 rather than zero like it is done with the 808?

Isn't it the same like in 808 file? EGR duty cycle map (0E1480 to max 17450 in 809 file, 15500 in 808) Hysteresis bumbs cut at 2600 (or 2500) to zero vs 3400 in 808. FCV map(?) at 0E2140 to max value, 15000... (same in 808)

Yeti · **Posted:** Mon Apr 21, 2014 2:46 pm

Squeeto wrote:

Yeti wrote:

FCV is at 0E1480 the hysteresis is right , but the egr is the next map at 0E2140 , put the FCV at max value :wink:

So you need to max the values of FCV for the 809 rather than zero like it is done with the 808?

mmm what 808 ? , I have done one for putting the egr fcv delete kit that someone sell here , I'll watch it

Yeti · **Posted:** Mon Apr 21, 2014 2:50 pm

lostFinn wrote:

Squeeto wrote:

Yeti wrote:

FCV is at 0E1480 the hysteresis is right , but the egr is the next map at 0E2140 , put the FCV at max value :wink:

So you need to max the values of FCV for the 809 rather than zero like it is done with the 808?

Isn't it the same like in 808 file? EGR duty cycle map (0E1480 to max 17450 in 809 file, 15500 in 808) Hysteresis bumbs cut at 2600 (or 2500) to zero vs 3400 in 808. FCV map(?) at 0E2140 to max value, 15000... (same in 808)

you are right , I do not understand Squeeto question :roll:

lostFinn · **Posted:** Mon Apr 21, 2014 3:19 pm

I have now being using this 809 tune and overall it feels very good... Only drawback is the shudder when converter is locked. I have lovered gear torque limiters 5 and 6 to original and it went better, but still there is minor shudder especially in 5th gear.. Do I have to lower some another map also to get torque lower in 4th and 5th gear? What about that lock-up limiter?

I believe those 7 torque limiter maps are:
1=1st gear
2=2nd gear number 1
3=2nd gear number 2
4=3rd
5=4th
6=5th gear
7=reverse

What do you think? When it was stock, there was never any shudder...

disjaukifa · **Posted:** Mon Apr 21, 2014 3:21 pm

lostFinn wrote:

I have now being using this 809 tune and overall it feels very good... Only drawback is the shudder when converter is locked. I have lovered gear torque limiters 5 and 6 to original and it went better, but still there is minor shudder especially in 5th gear.. Do I have to lower some another map also to get torque lower in 4th and 5th gear? What about that lock-up limiter?

I believe those 7 torque limiter maps are:
1=1st gear
2=2nd gear number 1
3=2nd gear number 2
4=3rd
5=4th
6=5th gear
7=reverse

What do you think? When it was stock, there was never any shudder...

Just adjusting the timing and everything else in the other maps will affect the torque shutter. I would lower the values even more for 5th gear, so its around 275ft-lb torque honestly, that is what GDE do with their stock tune.

-Grant

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