Hello guys,

I would like to make a thread of learning how to tune a stage 2 1.8t, hoping that it will also be usefull for others as it will be for me with your suggestions
I`ve been working for like 2 years on my 2002 Skoda Octavia MK I vRS (AUQ engine code) and i am now soo close to stage 2.
Current engine mods are:
- 76mm (3inch) turbo-back exhaust
- 550x230x63 front mounted intercooler with 63mm (2.5inch) piping
- Forge 008 diverter valve
- Deatschwerks DW65V in-tank fuel pump
- 317cc stock injectors (0280156061)
- Honda S2000 air filter + 63mm aluminium turbo intake pipe
- Ultimate delete (brake booster, N249, SAI pump, etc.)
- Stock K03S turbo
Dyno of current setup is attached.
Since i dont have stronger Forge actuator, i guess that with this setup a remap should get my car to 230-235 hp.
Ps: Stock file is attached.

Step 1:
HW: 0261207440
SW: 1037363908
SW upg.: 06A906032HN 0002
As i got bigger injectors (BAM 0280156063, 386cc) new, for a good price, i started learning the basics of me7.5 and chiptuning by adapting those.
For this adaptation i understood that there are 5 things that need to be attended:
-KRKTE (Stock: 0.10311 Modded:0.08322)
-TVUB (replaced stock values with the TT 225hp ones): 1.7413 1.1387 0.8107 0.5973 0.4427
-TEMIN (same values, no need to touch this)
-TEMINVA (same values, no need to touch this)
-FKKVS -> This needs the most attention. I`ve started from the stock ones, log (via me7logger) and correct via FKKVS fixer, modified map, log again, FKKVS fixer, modified map, etc.

I`ve also attended the following:
-N249 (please dont bash about this, i`ve read the forums  ), J299, N112, Cat disable:
->AA FF 00 30 FF F8 30 changed to AA FF 00 F0 FF FB FC (ULT SLV SLP LSHHK set to 11)

-Catalyst Heating disabled:
->FKHABMN_0: 0.8 -> 0
->FKHABMN_1: 0.8 -> 0

PS: Current file is attached.

Step 2:
I guess this is adding more power.
This is where i think i have to take it slow. I understood roughly what i need to touch in the software but i still have to learn some more.
I`ll be waiting for suggestions! If you can please guide me to have an easy approach (maybe targeting like 210hp first)


Thank you in advance for your support!

Hello, fukenbroken,
Thanks a lot for your feedback, i get your point!
My car was completely stock and everytime i`ve changed something (either broken or needing to upgrade anyway) i prefered to use "stronger" parts, so i would not limit myself to this tiny k03s.
Plan is to get GT28 in like 2 years. So because of this, i thought that oversizing all my components will make my current setup work seamlessly (although it involves a little lag, bigger costs and headaches) and will be easier to get a GT28 mounted since i will only adapt small portions of IC piping, Downpipe, etc.

After installing the 386cc injectors i`ve observed an increase in fuel consumption efficiency. Could it be real? Since i saw that KVB should be touched only if really big injectors or higher pressure FPR.

Also, regarding your tuning suggestion, shouldnt i also touch KFMIRL/KFMIOP, LAMFA ?

PS: I`ve also attached my current map, as i couldnt do it in my 1st post.

I see, then i`ll try to do as you`ve suggested since i`m a newb and check how things are going.
If everything is OK i`ll aim for LDRXN = 195 (1.2-1.3 bar i guess) and also adapt the rest of maps/parameters as i start understanding more and more.
Thanks again!

intercoorler its good and need ...
stock not enough many times IAT over 80°c stock side cooler

dw65v need because old fuel pump very old and not enough flow
and buy new one not problem buy better than stock

bigger exhaust need new WG
and good bigger injector because stock good aprox 220hp max

Could NOLRA 7 be the cause of it? As I understood so far, this only affects long fuel trim at idle. 

Also, can you please tell me  the required AFR and actual AFR tags so i can check it out? i am not sure which they are.
Edit: found it
lamsbg_w         ;{AirFuelRatioDesired}              ; {Lambdasoll Begrenzung (word)}
lamsoni_w        ;{AirFuelRatioCurrent}              ; {Lambda-Istwert}

Thanks!

Leave FKKVS and NOLRA alone and use KFLF or HFM to tweak small areas of fuel where there are issues.  You'll find the stock table is fine.

Remember it will never follow perfectly, as long as you're not requesting 12.8 and it's giving you 15.4 it's fine.

Hello friend,

FKKVS is map that exist for live calibration for fine-tuning the injection correction where needed and this map is used as the last map for the fueling, so leave it stock!
Do not forget the KVB in order to get a good fuel consumption feedback on your dash
As adam- said, KFLF or KFKHFM are the maps needed to add/remove fuel where needed, I prefer to use KFKHFM for MAF_ready cars or KFLF on MAFless cars
Keep NOLRA stock

But for a project like this only Injector calibration + injector lag times are needed, then the fueling will be perfect if the parts of your engine which are responsible for the load
calculation are in perfect condition. If MAF is tired, then just expect a mess!

If you removed the stock airbox, good luck getting fueling right.