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Author Topic: 1.8T BFB - more power needed  (Read 9185 times)
roman_tyk
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« on: April 19, 2013, 07:31:26 AM »

Hello everybody!

I bought audi b7 2005y with engine 1.8T BFB 163ps.
In the beginning i removed second lambda and catalyst from software.
For tests i modified only LDRXN's maps (up to %=145) but
from vag logs it's seems that i should change injectors to 320cc (stock are 280cc) and i am getting inj time higher then 21ms.

logs:
http://vaglog.rtnet.pl/roman_tyk29_122674.html
http://vaglog.rtnet.pl/roman_tyk29_122673.html


I am planning to advance my ignition, can i copy all KFZW/KFZWOP maps from BEX engine version (320cc and 190ps)?
I am wondering because % axis on my ECU is scaled to 140...and in BEX it's scaled to 160. I think i can't change axis because it's common for a lot of another maps, am I right?
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SVSPORT
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« Reply #1 on: April 19, 2013, 02:35:43 PM »

You have to calibrate the A/F ratio, first.
As you can see, you have 0,9 (~13,2) a/f until 5300-5400 rpm and then goes to .73(~10,7).
Change LAMFA (>850C) and KFLBTS (850C>).
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roman_tyk
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« Reply #2 on: April 24, 2013, 01:07:26 PM »

I would like to start my tuning adventure with changing injectors to bigger one. Then i will remap A/F ratio as you suggested. I am planning to buy K03s, the best option for this will be 320cc injectors or 440cc?

For 440cc do I need to change any other maps then KRKTE/TUVB/KVS?
My stock values now:

KRKTE=0.06904
KVB=304.69
TVUB 1.4071 0.8784 0.6114 0.4459 0.3311
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hipeka
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« Reply #3 on: April 25, 2013, 07:00:39 AM »

I am planning to advance my ignition, can i copy all KFZW/KFZWOP maps from BEX engine version (320cc and 190ps)?
I am wondering because % axis on my ECU is scaled to 140...and in BEX it's scaled to 160. I think i can't change axis because it's common for a lot of another maps, am I right?

Have you try to compare values? Most of those kfzw maps are quite same at lower loads.

Can you post that BEX .ols file here? 
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roman_tyk
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« Reply #4 on: April 25, 2013, 07:26:21 AM »

Ok guys i rechecked BFB maps and BEX maps, if i want to change injectors from BEX 320cc@3bar

Should i change those


to:



BFB 280cc@3bar
KRKTE=0.06904
KVB=304.69
TVUB 1.4071 0.8784 0.6114 0.4459 0.3311

BEX 320cc@3bar
KRKTE=0.06161
KVB=304.69
TVUB 1.3510 0.8224 0.5554 0.3898 0.2750

Why KVB for both is the same?
« Last Edit: April 25, 2013, 07:29:21 AM by roman_tyk » Logged
roman_tyk
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« Reply #5 on: April 25, 2013, 10:22:35 AM »

I think the problem exist on my KVB maps locations....

What is stock KVB value for BFB and BEX?
I am searching for (8bit): 62/64/66/68...
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SVSPORT
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« Reply #6 on: April 26, 2013, 11:20:26 AM »

I think the problem exist on my KVB maps locations....

What is stock KVB value for BFB and BEX?
I am searching for (8bit): 62/64/66/68...
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roman_tyk
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« Reply #7 on: April 27, 2013, 03:32:22 PM »

@SVSPORT  really thanks for comparison.

I reviewed about 10 differents 1.8T definitions map.
There is always convention like this:

Examples:
1. 32768 32768 00753[krkte] 25933 00004 00103 00148
2. 32768 32768 00944[krkte] 25933 00004 00157 00177
3. 32768 32768 00928[krkte] 25933 00004 00103 00176

On my BFB I found:
1. 00150 00125 00622[krkte?] 25933 00004 00157 00177

For krkte 0.10367 there should be 933(dec) with factor 0,000111, i don't have this value on my BIN.
But for factor 0,000167 i will get krkte=0.10387

Which factor should i use?

Is there any way to easy find out krkte?


« Last Edit: April 28, 2013, 02:18:08 AM by roman_tyk » Logged
SVSPORT
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« Reply #8 on: May 04, 2013, 09:42:06 AM »

Here your KRKTE
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roman_tyk
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« Reply #9 on: May 04, 2013, 11:22:44 AM »

Thanks SVSPORT i found it few days ago, it was problem for because i was looking for value with factor 0111 and here was with 0167.

Today i successfully removed catalyst:




and installed downpipe 2.75.
I collected logs and seems that turbo is spooling up earlier Smiley and it's blowing about 0.85bar in stock:

My vagcom logs:
http://vaglog.rtnet.pl/roman_tyk29_125071.html
http://vaglog.rtnet.pl/roman_tyk29_125070.html

Nice mod  Smiley

In next week i am changing injectors to 320cc@3bar black from BEX 190ps.
TVUB/KVB/KRKTE already found.
« Last Edit: May 04, 2013, 11:53:47 AM by roman_tyk » Logged
roman_tyk
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« Reply #10 on: May 09, 2013, 11:16:28 AM »

Hello everybody!

I changed injectors to 320cc@3bar, in stock injection time decreased to 14ms.
So i uploaded my program (ldrxn, kfmiop, tagbts...->modded)

http://vaglog.rtnet.pl/roman_tyk29_125702.html
http://vaglog.rtnet.pl/roman_tyk29_125703.html
http://vaglog.rtnet.pl/roman_tyk29_125704.html

Now i am playing with fueling, in the end of rpms and max load i want to hold lambda in 0.78-0.8:



Is it good for this engine and k03?
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Kacza
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« Reply #11 on: February 05, 2016, 10:09:22 AM »

Hi. It is enough that you write KRKTE, KVB and TVUB from map BEX to map BFB and injections were calibrated OK??
Did you additionally correction?
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