Hey guys,
Sorry for the long post and new thread, but I the more information I can provide the best the answers/solutions will be. I have been out of the loop for a while but I really want to get this project done once and for all (asap) so I am asking for your help if you could please answer my questions that would be EXTREMELY APPRECIATED.

The context:
I installed at the beginning of the summer the regular 16g setup that most of us have with the 440cc wrx injectors and the 255lph walbro pump. I am running the stock FPR.

I flashed the roadspike's auto big maps into the ECU and kept the stock MAF.
I did not change anything in the ROM, except for the injectors scalings for the 440cc injectors that I found on this forum (412 as the cc size, changes to latency values, etc.). I did not touch the MAF scalings.

The issue:
The fuel does not seem to get to the engine. I went to go see the BEST tuner in the province yesterday (he tuned over 100+ cars with EcuFlash, but only Evos 8-9-X). He told me something has to be wrong with my fuel delivery, since I am seeing loads over 170+ with AFRs in the 17-18's . Obviously this does not correspond to what's in the maps. My injectors and MAF still need to be tuned, but the diff in fuel trims is about 5-6% so it should not explain why there is no fuel going in. Even at low boost, the AFR does not go up as the loads and RPMs go up. I can drive the car outside of boost with no visible problems. It idles pretty well too. The check engine light does not light up so I am guessing I have little to no knock outside of boost.

The questions:
Am I using the correct maps or should i go evo8 rom / evo8 ecu?
Can the stock FPR be the issue? I don't think ppl here upgraded their FPR.
Could the fuel pump be the issue?
How about the injectors?

Any help is appreciated.

Cheers,
Pete

 

Have you logged this? What does your injector duty % look like when its going lean?

I honestly can't remmeber if i removed the load and fuel caps by default in my rom can you check those? they should be 0x9 for both of them in the standard rom. The SD rom is the only one where the load cap should remain default.

 

I had a fuel delivery issue for a LONG time with the 440's. I still run stock fpr and rail. Have you had them flow tested? I never did and in order to have my fuel trims in check even with 396 scaling my latencies were pretty high. The only way I fixed it was when I stopped using the 10-15% below rated flow method and used my own method to figure out where my injector scaling had to be. That number ended up being 360 and my fuel has been great ever since.

 

Ok i have an answer to a few of these questions....first of all you have to set ur injector scaling a little lower (i have mine set at 366 some have set it to 361), you have to adjust your maf scaling also because the big map's maf scalings uses the stock maf scalings but i would recommand using the evo 399 maf if you have it... it does change and help alot with the tuning and performance( i went from 15.4 to 15.1 and i had no good runs at the 1/4 mile with the 399 maf). If you do use the 399 maf take a look at the maf step by step swap thread and use the stock 399 maf scalings from the evo, it's a really good start for tuning. And for the adjustable fpr im pretty sure u have to get one (if u don't have one i do... i baught one but i don't need it because i have a 04) im pretty sure you have to raise your fuel pressure by a ''x'' psi per psi of boost. And also you can't use an evo rom/ecu because you're an automatic...the evo rom/ecu only works with the M/T lancers.

 

Update:
marcouxa1 gave me his maps and we swapped along the stock MAF for the 399 MAF and it now works fine under boost, with only little hesitation. It looks like I'll have to do a bit of tuning with the MAF, injectors, timing, AFR etc. but I can now hold boost!

Thanks guys for the help and I'll keep you updated on the progress I make.

 

just read, glad you got it to work cuz I was going to advice on adjusting the MAF scalings to get the fule to where you need it to be.

 

Meaning he gave you my maps...

 

haha maybe... so thanks to you as well!

 

No problem. I'm glad it helped. Slater and I are still tinkering. Maybe Grinder will figure out something with shift points and or maps will keep growing.

Take a screen capture of your scalings. If they are close to mine at this point you should just adjust afr tables to dial in.

 

i can send you mine as well. At 5 psi, I have it getting it to 11.1, I had it to 10.9 but for street pulls 11.1 is fine.

 

That would be great! Please send it to evopetemtl@hotmail.com For some reason in EcuFlash I can read/write from the ECU, but I cannot link any .hex ROM read from the ECU to it's .xml definition file, so I cannot see what it's my ECU ROM right now.

My definition files are in the right folder and EcuFlash is pointing to this folder in the options, so I still to figure out what the issue is.

 

Have you guys ever had issue with EcuFlash? I'm trying to troubleshoot this and I'm getting nowhere. I have no issue seeing the maps for my stock rom, but when it comes to the auto big maps from RoadSpike, either EcuFlash crashes or I get the error message below. If I try to inherit from a def file in rommetdata folder, I cannot find the file definitions from RoadSpike. It is there in the folder, though. I tried putting the rommetdata folder in another location and chaging the path in the options but got no luck.

Any ideas?

 

I only took your afrs and timing and made my own maps with the ones you sent me and the ones i already had. My maf scalings are completely different though...much higher idk why it worked better for me maybe because if my setup. i have a custom full 3'' exhaust i made and a custom IC/IC pipings so yea...

 

:|

Obviously since you two changed mafs...

 

You have my definitions?

And you downloaded the 512kb file yes?

https://www.evolutionm.net/forums/la...-map-roms.html