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Alfa GT Idle / Power issue(s)

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Did post in another thread but I've seem to have grown some more issues related to the original one. So would like some further guidance...

Car = 2006 Alfa GT 1.9JTDm, just hit 50,000. FSH. Recently had new glowplugs and a relay + oil service

Problems:
#1 - Idle would be pretty uneven and even make the car shudder very slightly
#2 - On long motorway drives there seemed to be more turbo lag below 2,000rpm or it'd stutter before the turbo wakes up and power comes on
#3 - Started up recently to drive to work, after about 200metres in first gear the power/turbo completely died, i was in first with my foot down, revs would barely climb so practically rolled 20metres with no engine (engine was on). Then it sorta went back to normal
#4 - Same day I was driving with the engine semi-fully warmed up and it'd hesitate when i put my foot down in gear, or it'd be a mini shudder before speeding up.

I dunno if it's the EGR valve that's clogged up because it's been a motorway muncher all its life, maybe the last 5,000miles its been 50/50 town and A road.
Also the turbo itself seems fine, barely any smoke, lots of power when the turbos spinning, MPG isn't too terrible either.
No warning lights on the dash either

Any guidance will be appreciated very much
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Does your GT have swirl flaps? Check now......
You are right, blocking off the EGR and doing nothing else will raise a fault. Yes it would be ideal to delete the EGR but that requires someone playing around with the ECU, I have no idea how much this would cost and it would be useful to have an indication from those who have had this modification done (or someone who can do it) to share that info and any other tweaks that should be done at the same time :thumbs:
The pre-EGR gasket that limits flow to the EGR (that you can pick up on ebay) brought a fault up on my 147 that was replaced with the genuine modified/later type Fiat gasket that is fitted between EGR and inlet manifold. There has yet to be a fault on my car with that fitted but, amongst other things, I have fitted a new EGR.

On your car I'd check the vacuum pipe to the turbo actuator and boost control valve very carefully.
 

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How do I check if it has Swirl-Flaps?
To find if yours has swirl flaps take off engine cover (undo 3 x 10mm bolts and give engine cover a 'tug' to remove). Look at the back of the engine, behind the glow plugs, you'll see the inlet manifold. What you're looking for is a thin metal rod/arm connecting four black 'round things' in the top of that manifold...... if the rod/arm is not there and neither are the round things then you don't have swirl flaps and it's one to take off the list of possible causes.

Like I said earlier, I'd look at turbo actuator/boost control pipework - that's where I would start to be honest.
 

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The turbo actuator/boost control pipework is easily found.
With the car properly jacked up and on axle stands get underneath it with the undertray off. Look at the nearside front and find the airbox, on the airbox you'll see a cylinder type affair (bolted onto the airbox)which has two small pipes coming out of it. Replace both those pipes or, at the very least, check them both very carefully for damage.
 
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