Another hybrid k04-023

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Miguel_S#

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I have just rebuild my engine
The ecu will now be tweaked, i will share the info
Give me your opinions

Some parts
S2

nice fmic

S7

my hybrid turbo worked by "CRT Portugal" with badger5 billet
S6

the litle turbine, nice work CRT

S3

Badger5 V2 mani
S1
 
tfsi turbine and 2283 compressor with extended tip
 
Top end flow is very good but 1bar boost at 5600rpm?? sure that can't be right? I'd expect 1 bar of boost by 3000rpm max unless its been mapped like that of course.
 
beachbuggy said:
Top end flow is very good but 1bar boost at 5600rpm?? sure that can't be right? I'd expect 1 bar of boost by 3000rpm max unless its been mapped like that of course.
Click to expand...
the actuator spring is week, i will change to a better one
 
Last edited:
Dont see why a weak actuator spring would cause it too boost so late. If it can make 1bar @ 5500 it can do it at 3k..
 
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Could be the wastegate flap not seated/returned fully. Mine was very similar when my external gate piston seat broke up causing it to constantly bypass a certain amount of exhaust gas and boost onset to be similar time to yours on my k26?
 
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You could always try a 7psi extension spring to see if it helps, its 30 times cheaper than an uprated actuator

extension-spring.jpg
 
Its not the spring.. like i said if it can hold 1bar at 5500 it can do it at 3000..

maybe the map needs looking at first..
 
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just change the turbo actuator spring
the boost stays linear

Captura de ecra 2015 11 14 as 005500
 
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iam having some issues with misfire, bought a coil car stays better but with misfire, i think i need more coils

here a log with misfire with n75
Captura de ecra 2015 11 22 as 173110

i think maf values are awesome....

what do you think guys
 
Have you scale the torque maps properly? Looks like load is cutting ..also log throttle to see if it's closing..

Not doubting your mapping skills but if you haven't scaled the torque/load maps properly or disabled torque intervention you'll get seems like a misfire as the ecu tries to control torque..
This assumes you've adjusted fuelling and not getting a lean misfire.

Maf looks good
 
Miguel_S# said:
iam having some issues with misfire, bought a coil car stays better but with misfire, i think i need more coils

here a log with misfire with n75
View attachment 73611
i think maf values are awesome....

what do you think guys
Click to expand...
do you have afr wideband gauge in car? Essential to be able to dial in fueling
 
Beachbuggy my skills isnt the best Its true. Torque is off. The load problem Its me leaving the gas pedal.

Badger5 Yes i have And the value is not the best
 
Miguel_S# said:
Beachbuggy my skills isnt the best Its true. Torque is off. The load problem Its me leaving the gas pedal.

Badger5 Yes i have And the value is not the best
Click to expand...
Sent you a pm
 
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Captura de ecra 2015 12 05 as 152016

help needed...
the throttle body doesnt open. is this a malfunction or some kind of ecu protection?
 
Over boost causing throttle cut. But only over boosting as load maps are too low with uprated actuator
If you are using n75 dc for boost control then you need to make sure load maps are set high enough to not go to throttle cut.. setting ldrxn and deviation maps high and out the way should stop it from going into throttle cut.
 
thanks for all the help problem solved

Captura de ecra 2015 12 06 as 223510

afr is more than 14
boost less than 1.3bar
 
Good to hear its sorted.

However I think your timing figures are low especially around peak torque so whilst you have good Maf readings it won't be reflective on the power output.

To see decent power you need to be around the 15-18degree mark and upwards of that at peak torque.

I'm guessing no wmi is used?

Also I would say maybe sacrificing some airflow for lower iat and more timing would fair you better I think your high airflow is just making heat not power
 
car dont have wmi
IAT are 30º/32º

Pouco acelarador

the car is cuting timing.
so i decided to remove timing.
i will see if torque is 20nm in the sensors.
After afr is ok i will give more timing
 
way too much timing pull to be happy with.. - what octane fuel do you get to run it on?
this is only at 20% loads?
 
yes only with 20% load
fuel is ron 98 the best i can buy here
i think i might have a problem with knock sensor
 
the engine was fully rebuilt with 82.5mm cr 9.5 wossner pistons, rods...
it have 2500km
i do not know the torque applied on the knock sensor
engine mounts are stock
 
I don't believe you're making 300 grams now as you where making 270 grams before for similar boost.. Maybe you are but it's much more likely the maf is faulty or the wrong one.

Did you swap the maf over to wide band one when you swap to an me7.5 ecu..
 
living and learning..... thats life
now with maf proparly 290maf
Afr 1


Boost vs pressure 1
 
You are still making 20 grams more than before for same boost which a me7.5 isn't going to give you...

Either the old was wrong or this is wrong.

290 is possible so it may well now be right. What's timing like now?
 
i never had a good afr in me7.0
timing is cruisy, the ecu pull timing at idle
 
Log

L - maf M- rpm O- boost Q- intake temp S- coolant temp X- timing
 
Big timing swings . You have torque intervention going on. Either recalibrate the load maps or disable the intervention.
 
Only way you are going to tell if it's making good power or falling on it's **** is to get it on a dyno.

The timing seems low which would suggest that the extra air you are pumping is just making more heat and hence low timing levels but it is showing 1.1-1.2 bar relative boost for the maf reading of 290 which is incredibly good and a little hard to believe to be honest and why I think the maf readings are off.
 
beachbuggy said:
Only way you are going to tell if it's making good power or falling on it's **** is to get it on a dyno.

The timing seems low which would suggest that the extra air you are pumping is just making more heat and hence low timing levels but it is showing 1.1-1.2 bar relative boost for the maf reading of 290 which is incredibly good and a little hard to believe to be honest and why I think the maf readings are off.
Click to expand...

when lambda stable i will go to the dyno
the values are what the ecu says
thanks
 
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