RomRaider

I have read out a tune with flex fuel and merpmod already done but its an old version and I am chasing the xml if anyone has it.
I would prefer not to start again with the latest version and just make necessary changes to current tune.
AZ1G202G.MeRpMoD.Switch.Testing.v00.60.d16.3.14.2005.xml is what I need.
Thanks Marty

Hello,

Does anyone have modification for AE5W101V? I tried follow @Happytime instructions but I think I missed some knowledge.

Does anyone happen to know if the A8DK100Y-Flex ROM would work with A8DH202X ECU's? In hex, the addresses are only varying by 3 bytes between the 000FF8 and 001000 range. I know that means it's fine on the AZ****** ECU's, but don't know about the GD chassis ECU's. I went to patch for flex with aijmod, but have to do some refactoring due to variable issues. Figured I'd ask here while refactoring to see if anyone either has the 202X patch, or a compatible binary from another CALID.

Attached is the current state I'm at with refactoring. I'm currently adjusting definitions due to the old ECU not having the AZ* ECU definitions. pManifoldRelativePressure appears to just be a difference of 4(decimal) compared to AbsolutePressure.

I just want to verify I have everything correct on my map before I flash it. I'm wanting A2ZJ710J which is the 04 STI map pg 1. Does that only allow flex on the rear o2 sensor or can it be config for TGV because I'm only getting rear o2 as option under the Merpmod Map Switching.
Thanks,
Randy

hi, can anyone help with the Switch/Flex mod for A8DH100P and A8DK100P? I was able to configure merpmod.gratis for a8dk100p in Sharptune, but there is no cel flash there. I tried to compile ajimod, but nothing works

Sadly, not in this ROM. I've been busy working on my other turbo Foresters but I'm back to my main one again and am going to try big ol' values in the only IAT-related compensation table and see if it affects it.

It's kind of backwards from logic too, because why is it running rich when cold? Cold air is denser and needs MORE fuel to hit stoich, so if anything it should be running leaner when cold. Alas, mine is doing -9% at idle when IAT is cold like 32°F and close to 0% at 65°F.

Definitely confirmed that the MAF IAT Compensation table does in fact affect the fueling even though it's SD not MAF based. I just threw -10% tapering to -5% in there and it didn't apply very much at idle but cruising it was definitely applying the full compensation. If I touched into open-loop barely, AFR would hit 17:1, so I took it easy until I got home.

Also seems to be true that the compensations have a multiplier that makes them take less affect at low loads, though that table doesn't appear in ECUFlash. I'll check in RomRaider. So I may have to do extra high compensations values at load mass airflow and taper it quickly.

I think I'll zero out the MAF IAT comp table and log data when IATs are around 60°F to get my VE table tuned better, then alter the IAT comp table as temps drop, which they will down to the negatives usually. Montana winters are no joke, but I'm in one of the warmer areas at least.

Next up for this car is taking out the Airlift suspension because I don't want to deal with it during the winter, with the valve freezing, tank leaking, having to add antifreeze to tank and drain it weekly which is hard since the tank is mounted upside down, etc. I have some OEM STI struts to put in. Then I'll refinish my 3rd set of wheels (base VA STI 18" wheels) a bit and get the studded snow tires mounted up. My daughter has my lifted '07 FXT so I have to daily my '04 FXT - well, daily is an over-statement since I work from home.

Anyway, glad to see the comp table working! I needed it. Cheers!

yes

furthermore, I tried to do Pv=nRT for centered IAT of 86F and baro of 14.7, and came up *very* close to Cobb's. Eventually after testing, I made the decision that Cobb's is best.

I then also ran Pv=nRT for change in atmospheric pressure, and came up with the SD baro comp. This was initiated by vehicles that were going up 3,000 to 5,000 feet in a day and being able to send out revisions during the trips.

tested from 14.9 to 13.5 PSIa baro

also I use the inverse of Pv=nRT comp for wastegate duty. what is it that makes you need less wastegate duty at colder temps? isn't it the change in airmass?

I had DimeMod on my 2011 STI, good stuff. Unfortunately, can't do it on my '04 FXT/STI

I think the closest thing to atmos comp on this ROM is the "Front Oxygen Sensor Compensation (Atm Pressure)", but that won't help in open-loop. I'll just have to bring the laptop with me when I change elevation in large amounts, but that's not going to happen often. This is not our road-trip car.

For VE IAT comp, there must be something going on behind the curtains where it's compensating because it's clearly going RICH when the temps drop. However, I haven't logged IPW to prove it yet because I am maxed out on parameters to log and don't need IPW to tune the VE table and boost/WGDC. I'm just glad the MAF IAT comp table is applying so I should be able to get it honed in before it gets really cold out. It was 26°F this morning when I went out there to move my car. Airlift system was still working, not frozen up yet. I might leave it on until it actually has issues, with OEM STI struts waiting in the wing. Sorry, tangent, I know...

That said, I greatly appreciate this ROM exists for me to do flex fuel. I am going to check out the normal merpmod ROM for '04 STI and might relegate this flex fuel one to special occasions when I want to unleash the beast. Besides, we have zero E85 pumps in Montana and just 1 within like 300 miles (Spokane). I believe Napa sells it for like $10/gal but I haven't checked.

hello a2ug000k, could you fix the patch? launch control doesn't work, no rev cutoff . thanks!

Hello, with the definition of usdm wrx 2006 a8dh202x with merpmod patch I don't know about you but I can't have the datalog functional with its defs. I have windows 10 64bit. It gives me an incompatibility with java. I read in parts of the forum that there is an error but it works well with 32bits of win10. I have the car working with SD but without being able to have datalog of iam, fdb, fine. I only have knock which is using the oem definition! Any help or someone who has the same problem? It only happens to me with that def because with an edm or sadm I have no problem!
thanks you!

+1 for AZE401A

first page, first comment

I'm using AE5IB00V on an AE5L700V.

Everything seems to work, except the CEL is on, and no codes exist. Has anyone had this problem? It's probably something stupid.

I need a patched flex rom for 2015 or later. AE5B00V is the AE5 patched rom readily available, i run it in a 2011 WRX and 2012 STI. 2015 is AE5R100V and while i can go in and change AE5B00V hex in HD editor, it will flash and run the canbuss is wrong and will not communicate with anything. There is a switch patched rom but with only 3 maps and no blending. I will add the avail patched rom and a not patched 2015 rom. Any help is appreciated.

The CANBUSS addresses changed in 201 and later