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 Post subject: Re: DIY ECU Flash
PostPosted: Thu Apr 18, 2019 9:15 pm 
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WWDiesel wrote:
Have you tried cleaning the MAF with some MAF cleaner? Available at most auto parts stores.


I picked up some cleaner today so I'll see what they does.

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 Post subject: Re: DIY ECU Flash
PostPosted: Mon Apr 22, 2019 3:23 pm 
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synthetic-oil wrote:
WWDiesel wrote:
Have you tried cleaning the MAF with some MAF cleaner? Available at most auto parts stores.


I picked up some cleaner today so I'll see what they does.


I can built a tune with maf delete too

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 Post subject: Re: DIY ECU Flash
PostPosted: Tue Apr 23, 2019 5:11 am 
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Yeti wrote:
synthetic-oil wrote:
WWDiesel wrote:
Have you tried cleaning the MAF with some MAF cleaner? Available at most auto parts stores.


I picked up some cleaner today so I'll see what they does.


I can built a tune with maf delete too



That would be great. MAF Cleaner didn't work.

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 Post subject: Re: DIY ECU Flash
PostPosted: Fri May 03, 2019 8:37 am 
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Hello all, just a quick question about these tunes.

#1 has anybody tried flashing a different tune not designated to their ecu? Like using a 808 for a 535 etc? (There is nothing above stock for my ecu so just curious, I know yeti can build me one I just don’t the money right now)

#2 I have flashed a stock with egr and fcv delete, do I leave the maf unplugged or do I plug it back in and is it safe to block off the egr now with a plate to ensure nothing is getting through ?

Thanks again.


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 Post subject: Re: DIY ECU Flash
PostPosted: Sat May 04, 2019 10:15 am 
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Jpd686 wrote:
Hello all, just a quick question about these tunes.

#1 has anybody tried flashing a different tune not designated to their ecu? Like using a 808 for a 535 etc? (There is nothing above stock for my ecu so just curious, I know yeti can build me one I just don’t the money right now)

#2 I have flashed a stock with egr and fcv delete, do I leave the maf unplugged or do I plug it back in and is it safe to block off the egr now with a plate to ensure nothing is getting through ?

Thanks again.


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#1 if you have luck the car start , if not the car won't start and you can try to write the stock tune , if something go wrong like some one had tryed out , you can not write back the stock tune and you take your Ecu and use it like a door stop , if you have super luck , you know some one near you that can open the ecu and write via BDM pad the original file stored in the Flash memory and try to rebuilt the Eprom file if corrupted or revirgin the Eprom and with an OE scanner insert the Key code and injector code and Vin

#2 you can plug the maf sensor if in the ecu file there is the egr and fcv function disabled , it's safe to block off the egr if your egr have had issue previously , remember that : with a block of plate you lose a function that discharge the intake from pressure at every pedal gas relase after a WOT

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 Post subject: Re: DTC Disable (with P0102 ORM example)
PostPosted: Fri May 17, 2019 8:19 pm 
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Yep, responding to a post in this thread from 2015. I'm looking at making a change to a DTC that falls into a situation that isn't quite covered by the below:

HrastProgrammer wrote:
Practical example ... Disable P0102 DTC so you don't have CEL while using ORM (Off-Road Modification - disconnecting MAF sensor to turn EGR off):

Open the appropriate DTC file for your ECU version. My ECU is 513 so I'll open 513_DTC.txt and locate P0102 code inside the table:

[008] P0103 P0102 ----- -----: E4879=16

From the above data you can see that error path for P0102 is 008 and the Error Class ID (16) for this error path is at location $E4879. To disable P0102 all you have to do is to put zero at this location:

Map[$E4879]:=0;

This will also disable P0103 because it is in the same group and has the same error path.

Save the modified map, write it to the ECU and that's it :-)


All of the above makes sense. However, the case I'm running into is as follows:

Our KJ's running an 811 ECU. The MAF sensor (which looks to be original at 139,000 miles) is getting flaky, and will (very) occasionally throw a CEL for DTC P0101. Because I have a Stage 1 & 2 Weeks Kit installed, I'd like to just disable the CEL for that particular DTC since the MAF is basically doing nothing and spending ±$150 to replace it just doesn't make sense.

In the 811 DTC list, there are three references to P0101: two at $E4272 (which is set to $25) and one at $E4346 (which is set to $00).

It's clear to me that $E4272 needs to be changed to $00, but I'm not sure what (if anything) needs to be done to $E4346 since it's already set to $00.

Can someone please clarify this for me? Thanks.

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225/75R16 Goodyear TrailRunner ATs
OME 1.5" HD Lift
JBA Lifted A-Arms
IRO WJ Short Rear UCA / WWDiesel mount
Skid Row Skidplates
HDS Model 001 Thermostat at 190°F
Stage 1 & 2 Weeks Kit
Bosch 5V glow plugs / 7V programming
Hayden 2986 fan clutch / GM 11-blade fan
Samco Intercooler Hoses
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 Post subject: Re: DTC Disable (with P0102 ORM example)
PostPosted: Fri May 17, 2019 9:03 pm 
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Joined: Thu Apr 20, 2017 10:27 pm
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casm wrote:
Yep, responding to a post in this thread from 2015. I'm looking at making a change to a DTC that falls into a situation that isn't quite covered by the below:

HrastProgrammer wrote:
Practical example ... Disable P0102 DTC so you don't have CEL while using ORM (Off-Road Modification - disconnecting MAF sensor to turn EGR off):

Open the appropriate DTC file for your ECU version. My ECU is 513 so I'll open 513_DTC.txt and locate P0102 code inside the table:

[008] P0103 P0102 ----- -----: E4879=16

From the above data you can see that error path for P0102 is 008 and the Error Class ID (16) for this error path is at location $E4879. To disable P0102 all you have to do is to put zero at this location:

Map[$E4879]:=0;

This will also disable P0103 because it is in the same group and has the same error path.

Save the modified map, write it to the ECU and that's it :-)


All of the above makes sense. However, the case I'm running into is as follows:

Our KJ's running an 811 ECU. The MAF sensor (which looks to be original at 139,000 miles) is getting flaky, and will (very) occasionally throw a CEL for DTC P0101. Because I have a Stage 1 & 2 Weeks Kit installed, I'd like to just disable the CEL for that particular DTC since the MAF is basically doing nothing and spending ±$150 to replace it just doesn't make sense.

In the 811 DTC list, there are three references to P0101: two at $E4272 (which is set to $25) and one at $E4346 (which is set to $00).

It's clear to me that $E4272 needs to be changed to $00, but I'm not sure what (if anything) needs to be done to $E4346 since it's already set to $00.

Can someone please clarify this for me? Thanks.


I hope this helps, I am running a 811 file in my CRD and its got over 20k miles on it with no issues.
here is what I changed:

TYPE = 811
FUNC LOC Code WAS NOW

EGR - E427D - P0401 - 10 --> 0

EGR - E429E - P0403 - 17 --> 0

FCV - E433C - P1140 - 17 --> 0

MAF - E4272 - P0101 - 25 --> 0

I made no other changes edited the 4 locations to = 0 and re-flashed the ecu.
everything worked as expected and no codes from the EGR/MAF etc.

Good luck.
-Kel


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 Post subject: Re: DIY ECU Flash
PostPosted: Fri May 17, 2019 10:23 pm 
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I am running a 811 Yeti Stage IV Hot tune and have been since April of 2014 and over 40k miles. I also have the Weeks EGR delete kit with no EGR or FCV.
I have rarely gotten either a P0101 or P0102 DTC a couple of times, can't really remember for sure which one, but the reason was totally unknown.
I simply reset it with my scanner and truck on. Not a real big deal to me....

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Ironman Springs/Bilstein's
Yeti Stg4 MaxTune
Weeks ElbowKit/BatteryTray
NO FCV/EGR
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SunCoast/Transgo
Carter Intank-pump
2mic.Sec.Fuel Filter
Flowmaster/NOcat
V6 Airbox
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 Post subject: Re: DIY ECU Flash
PostPosted: Sat May 18, 2019 11:32 am 
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$E4346 no need to be changed ;-)

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 Post subject: Re: DIY ECU Flash
PostPosted: Sat May 18, 2019 12:38 pm 
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kelbren wrote:
I hope this helps, I am running a 811 file in my CRD and its got over 20k miles on it with no issues.
here is what I changed:

TYPE = 811
FUNC LOC Code WAS NOW

EGR - E427D - P0401 - 10 --> 0

EGR - E429E - P0403 - 17 --> 0

FCV - E433C - P1140 - 17 --> 0

MAF - E4272 - P0101 - 25 --> 0

I made no other changes edited the 4 locations to = 0 and re-flashed the ecu.
everything worked as expected and no codes from the EGR/MAF etc.

Good luck.
-Kel


Thanks for those - I'd been meaning to knock out the EGR DTCs as well. The tweaked tune is built; if the rain will just let up for 5 minutes I'll go flash it over :lol:

WWDiesel wrote:
I am running a 811 Yeti Stage IV Hot tune and have been since April of 2014 and over 40k miles. I also have the Weeks EGR delete kit with no EGR or FCV.
I have rarely gotten either a P0101 or P0102 DTC a couple of times, can't really remember for sure which one, but the reason was totally unknown.
I simply reset it with my scanner and truck on. Not a real big deal to me....


Yep, I hear you. And, really, it's not a big deal to me either - I just don't want a situation where the false positive DTC trips the CEL at a time where there's also a legitimate DTC being stored. I'll end up ignoring the CEL, thinking that it's just that thing it does sometimes, and not find the code that actually needs attention. In a perfect world I'd grab the code reader and check it out ASAP before doing a reset, but things don't always go as planned.

Hell, I've even had legitimate DTCs pop up before, and have hit the 'clear faults on ECU' option without first reading them. :banghead: The fewer opportunities for screwups the better.

Yeti wrote:
$E4346 no need to be changed ;-)


Thanks - I kinda figured that was the case, but good to have confirmation :mrgreen:

_________________
2005 KJ CRD Limited 4x4:
225/75R16 Goodyear TrailRunner ATs
OME 1.5" HD Lift
JBA Lifted A-Arms
IRO WJ Short Rear UCA / WWDiesel mount
Skid Row Skidplates
HDS Model 001 Thermostat at 190°F
Stage 1 & 2 Weeks Kit
Bosch 5V glow plugs / 7V programming
Hayden 2986 fan clutch / GM 11-blade fan
Samco Intercooler Hoses
Provent 200
V6 Airbox


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 Post subject: Re: DIY ECU Flash
PostPosted: Sat May 18, 2019 3:45 pm 
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casm wrote:
WWDiesel wrote:
I am running a 811 Yeti Stage IV Hot tune and have been since April of 2014 and over 40k miles. I also have the Weeks EGR delete kit with no EGR or FCV.
I have rarely gotten either a P0101 or P0102 DTC a couple of times, can't really remember for sure which one, but the reason was totally unknown.
I simply reset it with my scanner and truck on. Not a real big deal to me....

Yep, I hear you. And, really, it's not a big deal to me either - I just don't want a situation where the false positive DTC trips the CEL at a time where there's also a legitimate DTC being stored. I'll end up ignoring the CEL, thinking that it's just that thing it does sometimes, and not find the code that actually needs attention. In a perfect world I'd grab the code reader and check it out ASAP before doing a reset, but things don't always go as planned.
Hell, I've even had legitimate DTCs pop up before, and have hit the 'clear faults on ECU' option without first reading them. :banghead: The fewer opportunities for screwups the better.

I simply keep my Innova code reader in the console of my Jeep and when a DTC happens to pop up, I read it, then clear it.
It only happens maybe once a twice a year for me.
Note: DTC's can be read and easily cleared on the fly. :D

_________________
Proud Supporting Vendor of LOST
05 Jeep Liberty CRD Limited :JEEPIN:

Ironman Springs/Bilstein's
Yeti Stg4 MaxTune
Weeks ElbowKit/BatteryTray
NO FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pump
2mic.Sec.Fuel Filter
Flowmaster/NOcat
V6 Airbox
GM11 blade fan/NAPA HDclutch
Ironrock Trilink
Dodge Cummins, 5"exh. Viair, Huge K&N


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