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Author Topic: lambda problem after conversion 3.8 to 7.5 AEB  (Read 13851 times)
loseisimprove
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« on: June 29, 2017, 04:45:11 PM »

hi guys i converted my AEB to AWT wiring harnes, i got chip and problem is when i open 100% thortle on third gear, lambda goes to 0.020V and +25 corrections. I have no fault codes i got new O2 sensor, coils, sparc plugs, DV, fuel pump
log:
115, 118: http://www.vaglog.com/log-115_118_SyD3QTy.html
003, 020: http://www.vaglog.com/log-003_020_1r3bO.html
002, 033: http://www.vaglog.com/log-002_033_88uXv.html

the car go nice on first and secound gear but on 3rd goin not so good,
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aef
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« Reply #1 on: June 29, 2017, 10:49:41 PM »

There is almost verything wrong.

-vcds logs instead of me7logger
-iat (in case the vcds header is correct)
-injection time
-throttle closing
-pedal position missing in log (did you try to run wot until redline?)

where are you located? hot weather?

If this is a tune, start with stock file and log again.
Fix hardware error from there. fuelpump and intercooler would be good to start.
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loseisimprove
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« Reply #2 on: June 30, 2017, 09:37:07 AM »

ok thx i will buy the kkl cable cuz i have only vcds cable, i have in my car new fuel pump, new fuel filter and new fuel regulator and new IC cuz my old was w/o place to MAP so i buy new NRF IC
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loseisimprove
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« Reply #3 on: July 04, 2017, 11:36:29 AM »

I put stock file to ecu but i edited only KRKTE to 0.07870 (0280150431 injectors) and change injectors from stock AEB to this bigger injectors. Later i make a log but only 16/s cuz vcds cable disconect on 20/s. I want to make 0.8-1.0 boost cuz i have smal IC (new). What maps i shuld edit and how? I know i need change LDRXN for boost but what more? I am noob plz help ( i study all time Tuning s4 wiki:D). I got new hybrid turbo for 220-240, new IC, new DV, new coil and spark plus, belts chains oil pump, new 02 sensor, new fuel pump (stock) new fule filter, and new FPR
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rogerius
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« Reply #4 on: July 04, 2017, 11:10:33 PM »

You can start reading here also:
http://nefariousmotorsports.com/forum/index.php?topic=6955.0title=
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loseisimprove
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« Reply #5 on: July 05, 2017, 12:02:16 AM »

i read this too but why lambda go on my logs to 0 at end?
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rogerius
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« Reply #6 on: July 05, 2017, 12:44:08 AM »

i read this too but why lambda go on my logs to 0 at end?
I did not see lambda log! where is it going to zero?
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loseisimprove
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« Reply #7 on: July 05, 2017, 01:21:28 AM »

from 5500 rmp to end
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KasperH
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« Reply #8 on: July 05, 2017, 11:10:25 AM »

from 5500 rmp to end

that is not lamba, its O2 sensor voltage, as it clearly states in the graph.
0= AFR 11/Lambda 0.75
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loseisimprove
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« Reply #9 on: July 06, 2017, 12:32:08 AM »

so what that mean hardware issue? software?
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rogerius
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« Reply #10 on: July 06, 2017, 01:01:25 AM »

so what that mean hardware issue? software?
You need to log with ME7 Loger a 3rd gear pull to redline, of the variables usually used.
Then many people here will help you diagnose your problem.
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loseisimprove
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« Reply #11 on: July 06, 2017, 01:31:01 AM »

You need to log with ME7 Loger a 3rd gear pull to redline, of the variables usually used.
Then many people here will help you diagnose your problem.
MAN ARE U BLIND? U SPAM MY THREAD I POST EVERYTHING IN POST 4 PLZ DONT ANSWER MORE HERE
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_nameless
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« Reply #12 on: July 06, 2017, 02:31:37 AM »

MAN ARE U BLIND? U SPAM MY THREAD I POST EVERYTHING IN POST 4 PLZ DONT ANSWER MORE HERE
Youre not going to get far talking to members of the group like ^ that. Considering your looking for handouts on how to edit your car for BASIC hardware changes.
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_nameless
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« Reply #13 on: July 06, 2017, 02:35:55 AM »

I put stock file to ecu but i edited only KRKTE to 0.07870 (0280150431 injectors) and change injectors from stock AEB to this bigger injectors. Later i make a log but only 16/s cuz vcds cable disconect on 20/s. I want to make 0.8-1.0 boost cuz i have smal IC (new). What maps i shuld edit and how? I know i need change LDRXN for boost but what more? I am noob plz help ( i study all time Tuning s4 wiki:D). I got new hybrid turbo for 220-240, new IC, new DV, new coil and spark plus, belts chains oil pump, new 02 sensor, new fuel pump (stock) new fule filter, and new FPR
Editing injection amount without changing the voltage offfset table is stupid. You cant just swap injectors and leave the stock values. No wonder why your fueling is trash
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If you are in the market for a tune and would like the ease of downloading and flashing a dyno tested tune for a fair price check out https://instatune.sellfy.store/
loseisimprove
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« Reply #14 on: July 06, 2017, 03:30:49 AM »

Editing injection amount without changing the voltage offfset table is stupid. You cant just swap injectors and leave the stock values. No wonder why your fueling is trash

Ok thanks so i need to change TVUB right or smth more?
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