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Hi Everyone,I'm new to this forum and Mini's.

There appear's to be a very similar fault someone else has posted a thread to on this forum back in feb 2012,but I'm not sure I'm happy with the final fix so I'd thought I'd start again by posting a new thread.I'd be ever so grateful for some feedback guys as I am well and truly stuck with what to do next.

It's a 2006 Mini Cooper S Turbo,with the N14 second generation engine.

The problem with vehicle is when you go to put the power down,for example pulling out to overtake on a motorway,the car goes in to limp mode,eml comes on and fault code 2884-Charge pressure control deviation is stored in the engine ecu.I can make the fault happen everytime,there is no turbo power and it drives like a non-turbo'd car.When the EML comes on the code will not reset until the code is cleared and you can drive the car normally without thrashing it and the car drives lovely,no problems at all until wanting boost.

This is a list of what's been done so far...

Cylinder head removed to de-coke all valves,new head gasket and bolts etc
New timing chain tensioner
New MAP sensor
New boost pressure sensor
New Catalytic convertor (After Market)
New pre-cat lambda sensor (After Market)
Replace vacuum pipes from tank on rear of engine to solenoid valve then to vacuum pump and waste gate
New turbo solenoid valve
Smoke tested all pipes on the inlet and turbo system (Smoke machine purchased for this fault!)
Checked BOV operation,all working okay.
Compressions all okay

Started to get fed up with this vehicle after all this,so sent it to a BMW Mini
main dealer,they had the vehicle for three weeks,re-checked all my work including the engine timing.They updated the engine ecu with the latest software (Still didn't fix it)They said they wanted to try a new turbo on it at a cost of £1800,which I couldn't justify paying as they said the couldn't guarantee it would cure the fault.I decided to drag it back from the dealership as they had it for long enough,I fitted a new borg Warner twin scroll turbo at a cost of over £700,still didn't fix it.Went back to BMW Mini and they told me to put a new engine in it???

If I by-pass the turbo solenoid valve vacuum pipes it gives it full boost(not healthy but it proves it can boost) lots of pops and bangs out of the exhaust,just ashame it didn't blow it up!

On the thread from Feb 2012 on this forum,someone has said a quantum re-map sorted this fault,I do not understand how?Is there anyone out there who can help or educate me on this fault please?I'm starting to lose the plot with it now and nobody can fix it.

Kind regards
 
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