yep

Het probleem van de dag:

OK op naar de grotere MAF behuizing.

Hmm. Ik mis als ik de gewenste load waarden zie wat tussenstappen sinds de vorige 1,1Bar metingen.
Wat heb je allemaal gedaan?

Een namiddag op de autobahn gespendeerd en het load verloop netjes geprobeerd te krijgen. Toen de curve OK was de load omhoog gegooid en goed opgelet dat de boost niet te hoog werd. Vervolgens max je de MAF en krijg je dit verschijnsel.

Martijn, mag ik vragen hoe je de requested load gelogd krijgt? Bereken je vervolgens de delta dmv. de ADX file? Thanks!

Zowel load setpoint en de delta zijn standaard parameters in de logging

Citaat van: Maarten-t5 op 04-11-2015 10:04:09
Zowel load setpoint en de delta zijn standaard parameters in de logging

Yes, found XP_SOLL, XP_IST en XPCP, thanks!

Tadaaaa  ..

Work in progress!

Goed bezig.
Voldoet de huidige pijp niet?

Nou niet bepaald Joost...is hieronder te lezen.

Stukje text van volvospeed:


So, this morning it was finally time to have my external wastegate fitted. I waited very long for this step and tried to drive with an internal one for the last 3 years, which worked okay. But when boosting over 1.5 bar, I found that the IWG had a harder time to controll everything.

At 10AM I started at JM TUNING,  a durch company about 1.5 hour from my house. They had a spot near a good coffee machine with free WiFi for me to work at, perfect!


After the mechanics finished an exhaust system for a Golf 5 GTI, my car was up. I was offered to remove the old exhaust system and ATP housing from the turbo myself, which I did to save some hours of labour from the guys at the shop.


When everything was removed, about a good hour later due to the ATP housing which is a bitch to remove with the turbo on the car, we went quickly through my wishes. Important to me is a good angle on which the gasses dump back into the downpipe, not to disturb the exhaust flow.

So..some pictures of the magic:





I then looked up the spring pressure of the wastegate. What you want for good boost controll is the lowest spring pressure to reach your target boost. For me that's a max of 1.7 bar, so my spring pressure needs to be 0.9 bar. By combining springs you can create the right setup:




And see here... the finished work. I'm really happy, the return angle is good and theres a flex piece installed.



But then... speaking about flex pieces... I found this in my old downpipe as we had to make a new piece anyways. Obey...the 1 inch downpipe mod!!



Unbelievable... this reduced my downpipe from 3 inch to 1 inch. Raises back pressure, restricts flow, raises EGT temp's.  If you want power..this is something you don't want. Later I got explained that the wrong type of flex piece was uses  (to be clear, the old downpipe wasn't made by JM tuning). We decided to make something new out of the correct material:


And here is a close up of the welds..and the installed result :

Wow, mooi om te zien.

Die oude downpipe, was dat een maatwerk of merk ding?

Damn.......  zoiets verwacht je dus niet....
Verklaart wel een hoop!

Zo, dat is niet zo mooi. Heb je daar al die tijd mee rond gereden zonder dat je dat wist?