Vacum pipe help, have a look at pics

[jameswrx]

Right removed both pipes from the actuators and the pills were as they should be (ie not turned in the pipes)

I\'ve replaced the pipes with some non restricted hose and reset the ECU, will hopefully take it out the weekend and see what it does but not hopeful after seeing the pills are straight

One other thing..

There are 2 hoses to each actuator, the ones I removed and checked go from the inlet compressor housing tee off on the front turbo.  Where do the others go?.  I tried to remove and check them for restriction but it was near impossible to get to the other ends of them (would have been very hard to get them back on)

[jonrx7uk]

The other hoses go to the Wastegate control & Turbo Precontrol solenoids.  They are together at the front of the Rats nest.  They can be got to by removing the pressure chamber.

[jameswrx]

Thanks for the help mate

Right, put the wastegate pre control hose (with restrictor) back in (as I read it has to be in there to keep transition spike low) and changed the actuator control hose with my own (without restrictor) and put a ball and spring boost controller inline in the same hose.  Also reset the ECU (just in case).

Finally taken her out for a spin (in some scary ice, especially scary when I\'ve been driving a 1.8 mercedes for 2 weeks)

It seems like it\'s ok on transition now, I don\'t have any preload on the boost controller (but they run a very tiny bit of preload but literally enough to seat the ball bearing) and boost is coming in at 0.6bar on 1st turbo and you can feel the transition but it\'s only spiking a tiny amount up to 0.7bar!.

I\'m a little bit cautious about being elated (as it\'s freckin dangerous out there) because I haven\'t done any long WOT at high revs runs to make sure it\'s 100% ok.  Before it was coming in way too hard though on transition and it\'s not doing that now I managed to floor it briefly at 5,800rpm and it didn\'t spike beyond what I said.

If it is ok, it seems I\'ve been a bit over cautious (if the ecu reset hasn\'t done anything) as the last time I drove the car when it was seriously overboosting I would sware blind that a restrictor inline in the wastegate control would not have any effect (as I tried easy throttle runs and it still went mad when transition came in).  It just seems the setup these cars run and the way they prespool is so different to anything I\'ve experienced (turbo\'wise) that the restrictor in the wastegate line was enough to make the prespool and 2nd turbo action behave like it did.  Normally a restrictor in a single turbo watsegate line would have an overboost effect at WOT but on a slow build of revs it doesn\'t spike like it would on WOT.  The setup these cars runs seems to spike however you throttle up because of the complexity.  Feel a bit stoopid not trying this before but was blinded by previous experience.

Oh well I\'ve learnt a lot about my car (as I\'ve had it in bits a few times now lol) and I\'m pleased.


Thankyou to everyone who\'s offered help :cheers