Hi,

Clearly new to the forum and have a money pit S3 as a project which I want to fiddle with the map settings for a bit of fun.

I am just trying to construct a safe map upgrade for my old 8L S3.  I did buy an encrypted "stage 2" mapped ECU to replace my previous standard Stage 1 243BHP Map.  This new ECU didn't "feel" as fast up to 5K as my previous ECU even with 3in DP, B5 TIP, Cosworth S2000 cone filter, FMIC.

So I decided to look at the MAP on my old ECU and compare it to stock 225 and a 260BHP map provided to compare,  since then I have been given a revised map which has most of the BAM Stock settings, with adjusted LAMFA, Engine Load, boost protection.

Based on the Stock BAM Map I have started to create a nice curve of LAMFA (maybe a little too rich)
Increased the Engine Load LDRXN and LDRXNZK
Added the Soft Launch settings from the wiki
Maybe stopped the P0420 error I was getting on my Stage 1 Map - but reading the S4 Wiki - the CDKAT set to 0 and CWDLSAHK set to 0 may fail the MOT emissions test 0 - so they may not simply code the error out but the actual sensors.


My Noob question is really
"is the timing adjustment only really possible by experts on a dyno?  would there be any point in me copying the previous Stage 1 timing or would that likely to have been a generic map in any case."

I think the eBay ECU made power by timing adjustments as the MAF readings were only 200 and my previous map was 194.

I don't have forged rods and the engine is quite old, I am not expecting it to last long but I don't want to break it first day

Is the Audi TT 240 Map readily available somewhere so I can see if that has timing adjustments? (Or is that the common Stage 1 Generic Map garages apply?)

By the way - I have not fitted this yet - just learning and comparing.

Thanks for any help

Stuart

Log. Adjust. Repeat.
It's a tedious process.

Yeah the best place to start reading is the S4tuning wiki. You want to get fuelling right first to ensure you don't melt anything.

Download tunerpro, find yourself an xdf file for your specific file and get starting. Oh and also be sure to download me7check and me7sum which are two command line applications used for checking and correcting the checksums. be sure to do this before you flash any files to ensure you don't brick the ecu.

With regards to logging yes, you want to set out as per the s4 wiki and also take a look at the stage 1 community thread which really helps. That thread will take you through all you need for doing a stage 1 file in the correct order. Logs are vital and also very useful if you need to ask for help on here. If you help yourself people on here will help you.

Yeah the 304kb read is not complete.

My advice would be to get a spare ecu from a breakers the same as yours. Use it to clone your ECU now by taking the contents from your 95040 chip and putting that on your spare ecu (this will require bootmode - useful for you to learn). Then flash a stock file on and learn with that. No risk then as you'll always have a backup. Then get started with the s4 wiki, stage 1 community thread, using me7 check and me7 sum.

There's so much to go over but I hope that helps

Perfect thanks this is really helpful,  I did already brick the ECU the first time due to check sums (luckily I didn't have the wipers on for the test drive so switched it back over in 5 minutes) - but I have sorted that out. 
What I think I will do is put the original stage 1 MAP onto the ECU in the car as that passed the MOT last year,  then get it through the MOT and follow your advice regarding the progressive tweak / test / tweak / test / tweak etc probably based on the standard stock BAM map, and as I understand it I should be comparing my "desired" with the "actual" and as long as "actual" is >=95% of "desired" that's is the sweet spot for the current components and engine health.

Do you know if it is possible to overwrite the MAP on the locked 304KB ECU without boot mode?  I am not really interested in the MAP contents which was supplied - it was advertised as 285+ - but the general opinion on the ASN S3 forum are that the injectors are maxed out at 270ish in any case, so this would then be my backup ECU

Also I think the me7Sum developer is a member here, did the original project download include the me7sum.exe file as only the source code seems to be provided now, maybe it was removed to ensure cross platform compatibility?

I know the connecting rods are the main risky point here - but as the K04 and Injectors are going to struggle to go past 270 - am I only really concerned about boost onset to try and safely taper.


Thanks - this is going to be fun (although slow going as it is supposed to be a project and not a full time job )

arrh perfect -  thank you so much for replying - I think I got confused with the ZIP files I had downloaded and maybe when I first looked at this thread, I wasn't logged into nefmoto and perhaps some download links don't work unless you're logged in, this is great thanks again for your quick reply.

and in answer to my own question I took a flyer to see if I could overwrite the locked ECU map and it worked although this took MPPS a lot longer than with my other ECU - it took about 5 minutes of cycling around before even asking me to switch off the ECU and start writing?  I have read back the map and it is now 1024KB.  so winner