Pages: [1]
Author Topic: KFVPDKSD/E and 100% throttle  (Read 5470 times)
BoobieTrap
Full Member
***

Karma: +3/-0
Offline Offline

Posts: 74


« on: February 14, 2018, 01:44:17 AM »

Hi guys,

Can't seem to figure this out, I am trying to get my throttle to open to 100% but it just does not want to play ball.
It's a 1.8T with a GTX30 so every little help in spooling helps.
I'm running the 5120 hack for a few months and everything else is behaving as it should.
KFWDKSMX is set to 100% across the map, and I have filled in KFVPDKD/E based on a 0%WGDC pull, but in any case anything above PR 1.96 is set to 1 and requested pressure ratio vpssplg_w is always above 2.
The log shows vpssplg_w > 2 for every point but vpsspls_w is 0.95 until 5k RPM.

Any ideas? Anything else I can log to help diagnose?


Logged
BoobieTrap
Full Member
***

Karma: +3/-0
Offline Offline

Posts: 74


« Reply #1 on: February 14, 2018, 02:24:29 AM »

FML, looks like I had the axis swapped somewhere along the line, I have re-defined it from scratch using BAM Winols file and the log files makes sense now -  my KFVPDKSD is completely wrong.

Logged
prj
Hero Member
*****

Karma: +903/-420
Offline Offline

Posts: 5789


« Reply #2 on: February 14, 2018, 02:09:28 PM »

The map simply tells the ECU for each pressure ratio whether it should control filling through N75 or through throttle.
Filling it is done by doing a 0% DC pull with a hot manifold and logging the highest boost the car is able to attain.
Add 0.1 bar to that for good measure and then fill in the table so that the values are <0.95 for the zones where the axis pressure is below spring boost and >0.95 where the axis pressure is above spring boost.

Of course that requires a correct definition of the map. If your defs are wrong all kind of messed up stuff is going to happen.
Logged

PM's will not be answered, so don't even try.
Log your car properly.
nyet
Administrator
Hero Member
*****

Karma: +604/-166
Online Online

Posts: 12232


WWW
« Reply #3 on: February 14, 2018, 06:00:32 PM »

Do you copy KFVPDKSD to KFVPDKSE?
Logged

ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
contrast
Full Member
***

Karma: +20/-2
Offline Offline

Posts: 215


« Reply #4 on: February 15, 2018, 12:03:55 AM »

In Volvos they’re identical from factory for example.
Logged
BoobieTrap
Full Member
***

Karma: +3/-0
Offline Offline

Posts: 74


« Reply #5 on: February 15, 2018, 02:52:21 AM »

In my original bin KFVPDKSD was identical to KFVPDKSE, so that's how I've left it.
What I haven't figured out yet is what the difference is between for example 0.96, 0.98 and 1. Does this map the throttle angle in the region between WDKUGDN and 100%?
Logged
aef
Hero Member
*****

Karma: +69/-46
Offline Offline

Posts: 1566


« Reply #6 on: March 27, 2019, 07:07:35 AM »

Did you solve this?
Logged
BoobieTrap
Full Member
***

Karma: +3/-0
Offline Offline

Posts: 74


« Reply #7 on: April 05, 2019, 08:45:53 AM »

Which part? I have sorted KFVPDKSD/E issue, which was bad definition in my XDF (swapped axes).
I haven't figured out the part about the difference between 0.96, 098 etc. but my throttle does open to 100% on WOT.
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.018 seconds with 16 queries. (Pretty URLs adds 0s, 0q)