Jaemus
Oh lame. Did you already check it wasn't something simple like a blown intercooler hose?

I checked all intercooler couplers, manifold/adapter gaskets and the wastegate gasket and everything is tight without leaks. I did turn up the boost controller a bit and took the car for a drive and the turbo did make some pressure...20psi worth. 

But the issue I have now is that it is VERY laggy. I'm seeing between 2psi and 5psi from 3500 to 4300 RPM and then all of a sudden it shoots to 20psi from 4500 to 5000 RPM. I have read that people are seeing full boost with a TD06 somewhere around the 4000 to 4500 RPM range so this leads me to think I may have a timing or fuel issue.
 
Who knows, could be something as simple as the stock chipped ECU I have is not optimised for the flow of the TD06 and is providing incorrect fuel trims.

Also I was able to rotate the turbo so that the oil feed is in a more upright position. However the cartridge has a locking pin that stops me from having it vertical. So I have had to settle with the oil feed at 30 degrees which was as far as it would let me go. 

Its an MBC, the brand is Turbo Tech to be exact. I never had any issues with it when it was running 18psi on the CT20b but I'll definitely test it just in case.  

External wastegate not sealing properly causing the lag? Exhaust bypassing the turbo.

Mrskylighter
Can you just try and run it without a boost controller? Just on wastegate spring pressure whatever that is.

Even with no boost at all the car should still have some power to go up Hills etc.

Maybe it's just a mismatched turbo and has heaps of lag then all of a sudden it hits really hard. Like the old Trust turbos T67, T78 etc

I can can give it a crack, though the wastegate spring is only 6psi. But the car has been more sprightly going up hills after turning the controller up.

I think you're on to something there. After doing more reasearch on the 20g's it seems that I'm only about 500-700 RPM off the norm. So maybe I'm just in a state of shock coming from how quickly the CT20b spooled and reached full boost.

MCT_MR2
You will find that if you switched the wastegate spring out for a 10 or 12 psi spring (as an example), you would increase response as the wastegate would be less likely to blow open from exhaust backpressure. Also with a 6psi spring, depending on how you plumb it, you wont be able to hold much more than 12-18psi of boost.

Was about to suggest the same thing. 

Update: 

I ordered and have installed a 13psi spring and sure enough it sorted out the slow spool issue. The lag is very much bearable now. I have also been trying to sort out an oil leak that I have had from the turbo oil drain flange. I went through 3 new gaskets before I gave up and decided I will get MRC to sort it out when it goes in for tuning. 

The car has now been at MRC for a little over a week. I have had the Injectors installed along with the ECU.
I have had to swap out the stock MAP sensor as apparently the VIPEC isnt able to work well with stock one. I have done away with the MBC and have had a boost solenoid installed which will run off the VIPEC as it will be a more reliable way of controlling pressure. I was against switching to a boost solenoid at first as I have had bad luck with them being in the engine bay and failing before. So I have opted to have it installed in the boot near the ECU away from dust and general engine grime. 

It has had a basic fuel map put on it at the moment but unfortunately the engine stutters in specific areas of the rev range. I noticed this after I had the new dump pipe installed whilst still running on the stock ECU; whether this is related or not is unknown but I suppose it could just be due to it being more audible due to less restriction in the exhaust system. MRC has been logging all engine parameters whist its been on the dyno but nothing unusual shows up when it stutters. 

A new distributor cap, rotor and HT leads have been ordered with hope this may solved the issue. 

More updates to come next week. 

Falcon
Hi Deco.     How did you go with this miss fire ?    Did the high tension bits change it or not ?
The igniter can sometimes be at the heart of this sort of symptom.  The OEM coils seem to be pretty good but they sure have to work bloody hard along with the king lead too.
I have used 28 thou.  Even 25 thou. plug gaps to overcome these type of hesitations but that is probably just masking a weak coil or something.

Unfortunately the new rotor, distro cap and leads didn't solve it. I was thinking whether it could be the igniter; no testing has been done on it but the igniter in there is all of maybe 25k old. But its on the list of things MRC will be checking. They also threw new plugs in and properly gapped them but that had no affect on the miss fire either.

No real progress has been made on the car this last week. MRC is currently overworked and understaffed. With any luck some progress will be made after Easter.