NefMoto

Hi guys,

first time really asking e question here, been reading fore some time on this forum really grate to learn from.

I have a problem with my requested boost from +-5000 to redline something is keeping my requested boost "to low" i'm tring to tune it to ask 2400-2450mbar until redline.

I tried to increase KFMRIL en LDRXN but with no luck. i think some correction or safety factor is keeping requested lower. but don't know or cant find with one.

Can someone take a look en point me in the good direction please.

If you need something logged to see have me7 logger working ( really great tool  btw).

attached the stock file ant the file i have so far.


HW i'm running

Audi TT 8N 1.8T AUM engine

Frankenturbo f23 kit  12psi wastegate
FMIC from APR
Milltek 3" downpipe sportcat
maf sensor in 3" housing  (put the map from tt225 is sw)
rods from integrated engineering
injectors 440cc greengiants running @ 4bfpr
air intake neuspeed pflow
singelmass 14lbs flywheel with sachs vr6 cluch
Engine mounts "VF performance"

Thanks fore the help Pieter-Jan

Have you changed KFLDHBN?

Please upload the original .csv

Yours is corrupted and contains semicolons instead of commas. Did you edit it in excel before uploading?

Oh. I see.

Localization :(

sigh.

yes it is increased but maybe not enough then?
But i don't see how this could be te limitations cause its al the same factors for the hole rev range. but then i don't know allot about it :D

I'm still verry new to tuning the sw myself just don with installing al the hw so now trying to push to what it can make :)

yes i edited it with a tool called "CSVConv.exe" also used to make the vcds logs easy readable

 

Try ECUxPlot :P

also please upload the original .csvs.

Research pressure ratio http://www.turbobygarrett.com/turbobygarrett/pressure_ratio and think about it in relation to what you are asking of the system via LDRXN.  You may see why "Its all the same factors for the hole rev range" makes no sense.  (In more ways than one, lol)

I made a new log and didn't chanced it this time


also i increased the map KFLDHBN but with no success. so i think there is a other limitation actief.

Go ahead and FF KFLDHBN for testing. (put the max value in) and see if anything changes. What does your timing look like? No chance you're knocking excessively?

   Group A:   '003            Group B:   '115            Group C:   '020         
      RPM   Mass Flow   Load   Ign, Timing      RPM   Load   Absolute Pres,   Absolute Pres,      Idle Stabilization   Idle Stabilization   Idle Stabilization   Idle Stabilization
   TIME               TIME               TIME            
Marker   STAMP    /min    g/s    %    °BTDC   STAMP    /min    %    mbar    mbar   STAMP   °KW   °KW   °KW   °KW
   0,86   2480   21,92   13,3   25,5   0,26   2440   46,6   1010   1050   0,56   0   0   0   0
   1,77   2560   24,5   14,5   25,5   1,16   2480   47,4   1010   1060   1,46   0   0   0   0
   2,67   2640   25,33   15,3   25,5   2,07   2560   48,9   1010   1060   2,37   0   0   0   0
   3,58   2760   45,5   29   22,5   2,97   2640   51,9   1010   1070   3,27   0   0   0   0
   4,48   2960   72,33   100   17,3   3,88   2800   97   1580   1230   4,18   0   0   0   0
   5,39   3320   112,75   100   5,3   4,78   3080   133,1   2440   1690   5,09   0   0   0   0
   6,29   3840   165,03   100   3,8   5,69   3480   185   2430   2390   5,99   0   0   0   1,5
   7,2   4360   187,25   100   5,3   6,59   4000   191,7   2480   2540   6,89   1,5   1,5   1,5   4,5
   8,11   4840   182,86   100   7,5   7,5   4560   191,7   2450   2460   7,8   1,5   3   1,5   6
   9,01   5240   185,97   99,6   9   8,4   5000   191,7   2420   2420   8,72   1,5   3   1,5   5,3
   9,92   5640   196,33   99,6   8,3   9,31   5400   184,2   2340   2300   9,61   1,5   3   1,5   5,3
   10,82   6000   198,22   100   15   10,21   5760   178,2   2250   2270   10,53   1,5   1,5   0,8   3,8
   11,73   6360   205,36   100   16,5   11,13   6120   171,4   2220   2180   11,43   0   0   2,3   2,3
   12,64   6240   19,72   8,2   15   12,04   6320   46,6   1010   1850   12,33   0   0   0   0
quick copie from a vcds log where the CF's are in.
pulled away some of the timing in kfzw because there was alot of CF but now is is "ok" think
But yes there is knock but wouldn't call ist excessively

perhaps this?

http://nefariousmotorsports.com/forum/index.php?topic=3981.msg40462#msg40462

My first post there applys to ME7 where the map is only active with a temp error.

Is it confirmed that rlsol follows rlmax which is limited compared to rlmx?

i FFed it end now it is oke requested is higher and probably wil folow ldrxn now so it was the limit, thanks everyone.
Would it be ok/safe to leave it ff and control requested boost just with ldrxn en kmirl

Safe, yes. Correct, no.

Copy the table from a k04 car.

Don't think the stock map from k04 will do because the map values i had before where already higher. but maybe can use it as e good start.

23 psig (assuming sea level and a low pressure drop inlet system) gives a pressure ratio of about 2.8.  Given a flow of 33-34 lbs/min at 7*C you're well within the capabilities of the compressor given the compressor map on the FT site
 http://www.frankenturbo.com/new/webimages/large/F23MAP.jpg.  The MAP sensor will max before you run off the compressor map (at which point you've lost protection anyway).  IOW, it looks like you should be safe at 3.0 and KFLDHBN will protect you if you overboost (well, it would if the MAP sensor weren't maxed in that situation).

All this said, you're much better off figuring it out for yourself than relying on a total stranger's calculations.

ok so i have found the problem with my KFLDHBN map and wy i didn't see the restriction in the map at first.
I had the map named in my olsfile but not the axis and it was "swapt" so i was making the adoptions in the wrong part of the map with no result on the requested boost.

So now it works and can i keep the "safety" in case op really high intake temps :)

At the risk of seeming pedantic, pressure ratio is just pressure at the outlet of turbo minus pressure at the inlet and isn't directly tied to ambient temp.  If ambient pressure is low (like when a storm's a brewin', or if you're at altitude), pressure ratio will be higher to the extent the compressor is able to generate the desired boost.  There are plenty of hot days with high ambient pressure where pressure ratio is lower than 'normal' and plenty of low ambient pressure cool days where pressure ratio is higher than 'normal'.

Really, KFLDHBN can come into play independent of ambient temp, especially with small turbos like the K03.

Glad you got figured out.