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Discussion Starter #1 (Edited)
147 JTDm 16V tuned to about 170BHP (plse examine the log)

Hi,

See post #6

or

OK here is the new log in 4th and 5th gear with cleaned MAP sensor



 

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what are we looking for, what issues do you have ? or trying to cofirm its 170hp from the log.
looks odd to me around the 2000=2500rpm the mass airflow is way too high for the given boost pressure.
i would try removing and cleaning the map sensor and log again.
also might be worth checking for any boost leaks in hoses etc.
and a higher gear might be advisable 4th seems to be the norm for the logs.
 

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Discussion Starter #3 (Edited)
Thanks sussexa,

I did a swap from my old 147 (same motor, ecu is a different number but it seems hardware is the same) tuned by Squadra NL (a well known AR tuner).

So i want to know if the swap is gone in the right way.

OK, I'm going make a log in the 4th gear shortly.

Not really having issues at the moment, car is running well, just for the check.
 

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Hi all can anyone out there tell me to set up the cables for the gear shift I can get all gears except reverse, not sure what cable does what!!?
Thanks
 

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one cable for left/right movement of the stick (up/down on the gearbox control), one for forward/backwards movement.

the reverse gear is locked by a lift up, that's likely your issue?
 

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Discussion Starter #6 (Edited)
OK here is the new log in 4th and 5th gear with cleaned MAP sensor




 

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Discussion Starter #7
nobody ?
 

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Discussion Starter #8
Nothing to say about my log ?
 

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hard to tell from screenshots rather than the log but 4th gear still looks to be very high maf airflow for given boost pressure.
its definately a jtdm and not a jtd 16v ? as if its the 16v it may only have a 2.5bar map sensor and its going off scale with overboost , this would make sense for the high maf airflow.
for 2500mbar boost id expect maf to be only 1200-1250mg/i
or for 1500mg/i maf id expect 3000mbar + boost pressure
do you have a boost gauge to confirm sensor readings are plausable ?
any signs of splits or tears in tubing after the maf , vapour trap or breather pipes .
 

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Discussion Starter #10 (Edited)
Thanks susexa ! (in the next days i check your remarks)
There is 1 thing that is not good: leakage through the swirlvalves to the outside of the intake manifold (worn seats).

Well on the back of the car is the logo: JTDm, don't know how else i can see if its really a JTDm.

I've just flashed a modified tuning in the car, in the next days i make a log again.

Here is the text log:

 

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Too high airflow, 10-15%... if it is a leak, get it sorted ASAP.
Your turbo will not be too happy with this on the long run.
 

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Discussion Starter #12 (Edited)
Thanks TribesMan !
OK I did a new log, but nothing change really.

If I upload the tuned file, are you guys willing to help me to point me to the right way with the file ?

edit: just inspected the tubing, this is what i saw, looks not good to me ?!

 

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Discussion Starter #14
So far as I know there was no adjusting of the MAF linearisation (which mapaddress do you mean?)

Presume that there are no leakages, how can I decrease the too high airflow ?
 

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Discussion Starter #16 (Edited)
Thanks TribesMan, i sure do it again.

Maybe you can point me in the right direction to get less smoke.....

What should the calculated AFR be ?


Tell me if can someone make it less smoke above 3500rpm and under heavy load ?
I will be glad to sent the tuning file and see what you've done....
 

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Discussion Starter #17
Today I flashed the original mapping and there was no smoke.
So I presume that the tubes etc. are OK.

Also I did a log and the calculated AFR (mass-air-flow/total IQ) was now almost at all rpm's .... 18 (instead of 14-15 with the tuned mapping)
With a max IQ of 70

I would like to know how i can reach no smoke with a max IQ of 82 (like my tuned file).
 

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basic answer is reverse your formula
you want smoke free 17 afr at 82mm3 you need 82*0.84=68.88mg iq x 17(afr)=1171mg/I of maf air
so you need either better cooling to create a denser air charge which will increase maf for same boost pressure , or you need to increase boost pressure till you reach desired maf air.
unfortunately both these will work your turbo harder and potentially past the safe limit of turbine shaft speed.
to check your inlet temperatures do a log of maf temperature c and boost pressure c and maybe boost pressure and revs and give it a 4th gear full throttle again and review temps.
also bear in mind if you have boost leaks like manifold swirl flaps your not getting the measured maf to the engine so you may need more like a measured 18afr to get real 17afr to engine.
also id be blanking the egr totally for a test to see if aything changes maf to boost ratio as its the easiest thing to do and most likely place to be leaking anyway.
had a look in your map hopefully tribesman can confirm as hes tuned many of these but i think the jtdm could withstand another 50mbar at the top end , from 3000rpm to 4000rpm but as weve already stated if a boost leak is suspected still you will be overspeeding turbo even more.
hopefully he can pull up a log off another car and check your vnt% compared to others and if for instance others on average are at 25%-30% vnt at 4000rpm at 2400mbar at 78mm3IQ
and yours is doing around 38%vnt all other things equal, would suggest you have a leak and car is increasing vnt to maintain boost.
 

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Discussion Starter #20 (Edited)
Thanks sussexa !

1.
My AFR is just the result of the (intake air quantity)/(total IQ) !
I don't know if its right and if it is the same you guys are talking about the AFR ?

2.
As I look at the results of my log below, I see that there is enough air (> 1171mg/i) with IQ so around the 80mm3/i
https://embed.gyazo.com/a7fdcfd5f84a4cc87c3957352955ae23.png

3.
Here is the log result of yesterday (org map only EGR blanked mechanically and software adapted ...with no (black) smoke)
https://i.gyazo.com/5ccac53c5d76249df6f073775c5e2e36.png

4.
Is it enough to disable the EGR completly with :

1C30E8 all to the max (1200)
1C356C all to the max (1400)


or should I adapt the following maps too

1C4B08 (to 0000)
1C4B6E (to 0000)
1C4BD4 (to 0000)
1C4C3A (to 0000)

?
 
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