Golf GT TDI 150 Overboost issues

[Rhyso]

Rhyso - When you purchased your Turbo I am assuming it came with an Actuator already fitted and surely if this is the case they would calibrate this correctly?

It did come with an actuator supposedly setup but it wasn't. 

[volatilebear]

Guys im having some major confusion issues with the fitting of the EGR

I've decided to keep the Vacuum Resevoir and was wondering If I still need to keep the Anti Shuuder N239 and Anti Shudder solenoid valve and vacuum hoses still connected? I ask this because ive heard if you keep the resevoir then you need to keep the anti shudder but please can you be specific as this is a little vague - Thanks

[scarr89]

Just remove the hoses that lead to the EGR, stick a screw in em and cable tie them up.

Just remove the hoses from the EGR, leave them plumbed into the valves, but just block them off. That is all you need to do. Leave everything else as is. 

[volatilebear]

Lol I must be annoying yo now scarr89!  It just annoys me leaving a dangling tube but I guess I would rather do that then find the correct resistor!

I'm assuming its just one hose and the screw thread would be going into the silicone/rubber then attached the cable tie nice and tightly around this?

[scarr89]

Roger on your last comment. The cable tie is just extra to stop it coming out. That is how many people leave theirs. Mine included. Even if you remove it you don't need resistors.

http://uk-mkivs.net/forums/t/393238.aspx

Following that guide would be where you take out the 'parts' that are not needed once doing the EGR delete. But don't bother...

Screw and cable tie FTW!

[RTechUK]

The main reason I didnt remap this car on the day was the way the bost was acting, if it was a quick 300-400mb over shoot spike at 2700rpm then I would have been happy to tune it as I would say 99% of all 150PD will have this overboost stock or tuned.
 
 My major gripe was that the boost held 400-500mb over boost close around -800-1000rpm the took a dive to 300mb underboost, tuning the car would have resulted it the boost going way over 1.9bar, even upto 2.2bar.

The VNT arm and actuator moved nice and free, both me and Jim checked it twice by and and mini vac pump, plus the actuator diaphragm reaction time was spot on, but this dont mean the actuator is 100%.

To sort this car out a lot of logging and trial and error testing is needed, start with the basics clean the erg and inlet manifol at the same time replace all the old vac lines.  If still over boosting change the N75 valve, if that dont cure it then change the actuator.

I can and will be a pain to diagnose.



Nick