MerpMod Switch/flexfuel version needed by anyone ?

unclefrosty9 · **Joined:** Sat Sep 18, 2021 6:10 pm **Posts:** 15

Could someone help me with adding merpmods to my current map and shoot me the definitions? I have used sharptune to convert my map but I haven't exactly succeeded. HEW is in limbo for me because my registration doesn't seem to be getting through. It's AE5L500V and attached in the zip.

13 downloads of this map like its gunna be a free tune for people? I am not a tuner so i don't suggest anyone uses this map but me.... Unless one of you 13 have converted it for me and know my tables are fine?

xodb SMiTED · **Joined:** Thu Jun 23, 2022 1:41 pm **Posts:** 6

Do you have a revision for A2UJ000J? I looked at the rom for the 06 sti, but it seemed to be incomplete. Please let me know what you have for the 07 sti.

atotalpro · **Joined:** Thu Mar 20, 2025 3:08 pm **Posts:** 1

I've got a 2010 USDM sti. Im assuming AZ1G202I-Flex2 is the right rom for my car. When I try to open it in ECU flash after pointing it to the definitions in the zip, it doesn't load any tables.
Im able to load AZ1G202G_FLEX-5 just fine from what I can tell.

Rspec · **Posted:** Wed Sep 10, 2025 9:37 pm

Anybody ever find the fix for the permanently lit CEL with no actual DTC after flashing AE5XXXXX onto other years?

benflynn · **Joined:** Tue Jul 14, 2020 9:11 pm **Posts:** 44

I have ported this rom to other years no issue except trying to go 2015 and newer, it will flash and run but the CAN is different. I have had cel wont turn off issues before on 2015 and later with rear o2 and egr DTC not defined

unclefrosty9 · **Joined:** Sat Sep 18, 2021 6:10 pm **Posts:** 15

Rspec wrote:

Anybody ever find the fix for the permanently lit CEL with no actual DTC after flashing AE5XXXXX onto other years?

If you have evap and SAI deletes, it's highly likely you have the same code i have. It doesn't show in btssm or through the tactrix related programs but I CAN pull the code up with a cheap cr123 scanner, and other generic ones....

P04AC is my specific one, and it is a ghost code because I disabled the codes on the tune for the delete but the youtubers are all wrong about it not through codes... Ultimately if you have the purge valve you deleted, that's closest to the pwr steering, and just plug it in (still deleted) the same way you would have for the barometric sensor, the code will stop throwing a cel.

This goes for other evap related delete ghost codes, and i have seen a few struggle with TGV, so instead of tucking, deleting or repurposing the harness plugs.. Add back one sensor at a time and re test a few start cycles. The code will clear and disappear obviously each flash and clear cycle but it returns on startup as "purge valve stuck open"... It's literally just a couple pins that can be shorted i think if your determined to find that out.

I have seen one instance specifically were the ae5 map was swapped onto another year that this worked.. for me my car is a 2013 sti sedan so that is my map.. but I'm certain the map tells the ecu to check for the evap stuff regardless the code is off

Gekido · **Joined:** Sun Oct 15, 2023 9:49 am **Posts:** 5

andea79 wrote:

LATEST BUILDS ATTACHED TO THIS POST

so you can use AE5IB00V MerpMod patched rom below on any AE5 rom in theory

STI
Market: USDM
Year: 16
ECU ID: A62A907107
Internal ID: AE5T201V

- Copied that ff9-ffd part from mine to AE5IB00V-patched, everuthing else is same up to 2000 slot.
- flashed that one in, car tried to start for like 3-4 sec, started, revved for a sec and wend down again, revs were not shown on the dash, I guess it won't work to just copy-paste from any other AE5 rom, has to be AE5T2***, right?
- flashed back to stock, car starts right away, works normal, dash shows revs.

Can someone help with getting AE5T201V patched?

Rspec · **Posted:** Thu Dec 04, 2025 7:45 pm

Gekido wrote:

andea79 wrote:

LATEST BUILDS ATTACHED TO THIS POST

so you can use AE5IB00V MerpMod patched rom below on any AE5 rom in theory

STI
Market: USDM
Year: 16
ECU ID: A62A907107
Internal ID: AE5T201V

- Copied that ff9-ffd part from mine to AE5IB00V-patched, everuthing else is same up to 2000 slot.
- flashed that one in, car tried to start for like 3-4 sec, started, revved for a sec and wend down again, revs were not shown on the dash, I guess it won't work to just copy-paste from any other AE5 rom, has to be AE5T2***, right?
- flashed back to stock, car starts right away, works normal, dash shows revs.

Can someone help with getting AE5T201V patched?

Use the patched ae5r100v file thats floating around.

Gekido · **Joined:** Sun Oct 15, 2023 9:49 am **Posts:** 5

Rspec wrote:

Use the patched ae5r100v file thats floating around.

Thanks!
Took me some time to find it, reposting again so folks can find ae5r100v patched.
Will report back if works, a bit sad it does not have flex though...

**UPDATE**
Memory up to 2000 was identical so no changes needed
Runs good, but still makes me a bit sad not having Flex capability

blacka23 · **Joined:** Mon Nov 03, 2025 8:50 pm **Posts:** 3

Hi all , i have rom A8DH202X. Is there a flex fuel patch available

Cisco's_B00sted · **Joined:** Mon Sep 30, 2024 4:48 pm **Posts:** 1

rbimdxe wrote:

gk1707 wrote:

andea79 wrote:

LATEST BUILDS ATTACHED TO THIS POST

*For the ones wanting to use MerpMod versions on cars that are not defined below (or in other threads) or just want to flash roms with different IDs I have observed the following:

1. if you compare 2 roms and they have the same content between 000000 and 002000 you can flash/use any one
(examples AZ1G201G, Z1G20000, AZ1J500G, AZ1G700K, AZ1L100G, AZ1L100K)

2. for 2008+ if you compare the roms and they have the same content between 000000 and 002000 EXCEPT the area between 000FF8 and 001000 you can edit the rom you want to use - just put the same content from your rom 000FF8 - 001000 to the rom you want to use and you can flash it (I used for example an EDM 2008 STI rom on a 2011 SADM WRX)

this means that with modifying 000FF8 - 001000 area and proper tuning all 68 roms starting with AZ1 from here https://romraider.com/forum/viewtopic.php?f=35&t=7591 can be cross flashed
or all 44 roms starting with AE5 can be cross flashed

so you can use AE5IB00V MerpMod patched rom below on any AE5 rom in theory

*USE WHAT I WROTE ABOVE AT YOUR OWN RISK , I did several cross flashing tests as described above but I did not test all possible combinations ...

Are there new Romraider logger definitions available for the A2ZJ710J-Test-8 patch? The included loggers definition do not seem to work with my Romraider logger. I am getting an error loading the defs.

What's the error?

I know when I set up my computer recently to start tuning again, I had to jump through some hoops to get RRLogger working.

I think it's because it's now set up with different transports in the logger def.

Give me a few minutes and I'll have a look and see

edit:
If it's the same issue I had, then try this def, and then you need to set the right 'logger protocol' in romraider logger (settings>select logging protocol>SSM>CANbus).

The issue, from memory, is that the new RRLogger is looking for information in the OBD protocol and tries to default to it, but because the transports weren't defined in old definitions, it has a hissy fit.

The included code in the def is:

Code:

        <protocol id="OBD" baud="500000" databits="8" stopbits="1" parity="0" connect_timeout="2000" send_timeout="55">

The updated code for the new defs is:

Code:

        <protocol id="OBD" baud="500000" databits="8" stopbits="1" parity="0" connect_timeout="2000" send_timeout="55">
            <transports>
                <transport id="iso15765" name="CAN bus" desc="OBD is only supported on CAN bus using a J2534 compatible cable.">
                    <module id="ecu" address="0x000007E8" desc="Engine Control Unit" tester="0x000007E0" />
                    <module id="tcu" address="0x000007E9" desc="Transmission Control Unit" tester="0x000007E1" />
                </transport>
            </transports>

I found your updated modded defs for A2ZJ710J-Test-8 work great , when their older ones in download did not, is there updated logger definitions for specifically A2ZJE11J_Flex-4 ? or could you provide some? plz, i tried the logger defs in the download but they do not work.

ImprezaJoe · **Joined:** Tue Jan 09, 2024 9:00 pm **Posts:** 1

I read through all 41 pages but I'm still lost. Has anyone made a map switching/flex fuel patch for 05 sti A2ZJB11J? I used the posted 04 rom for my old sti and really enjoyed it but it seems I'm limited with my 05. I have the gratis patch but I was hoping for more functionality (specifically map switching, CEL flash, fueling/timing/boost hacks). Alternatively, am I able to use the 06 A2ZJE11J Rom? I looked in a hex editor and it seems line 002000 is different between the two so I'm assuming that is a no go. Thanks in advance!

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