sounds like he crashed with his extra boost 
Just spoke to Spoolking on the phone and its worse case, piston melted at high rpms, new block needed.
Sounded like a fuel pump issue to me, there is a thermal protection map in place to stop high temps at high rpm the protection maps dumps fuel into the engine to help cooling, but if the fuel pump is weak the engine will run lean and hot and the thermal protection map will be asking to the fuel but there wont be enough fuel pressure or flow to protect the engine, over a long period at close to the red line the engine will fail due to being too lean.
I got a members car in from uk-mkivs.net which has been mapped by another tuner, by the looks of it in the past it has melted the engine, blown turbo ect. the car come to us the have the brand name remap removed and for us to load the r-tech remap, but within 10mins on the dyno with the ori map on the car we found the car was running a very very lean lambda of 18:1 /19:1 @ 5000 to 7000 rpm which was the cause of the original engine and turbo going pop. It was found that fuel filter was blocked which causeed the pump to work over time and become weak.
We also saw this on Barry_Gti's AUM at JKM rolling road day, the car made 212bhp with a failing fuel pump which would only fuel to 14:1/15:1 not major lean but enough to cause damage if left too long, new pump and filter fitted with in 2 hours and the car was running back on full power 220bhp with a lambda of 12.5:1 and 11:1 when it we got it heat soaked on the dyno.
If you ask Barry_Gti, there are NO symptom of a weak fuel pump or runningn lean, the car will run and feel spot on and even make good power on the dyno, at the same time being on the verge of melting a piston or turbo, nor will there be a fault code and this apply to remapped cars no matter who remapped and stock engines will also have the exact same issues.
To make sure your fueling ok you will need to log channels 31 Lambda spec/actual with vagcom, this can be tested on a remapped or stock engine.
Channel 31: Lambda Reading or A/F Ratio This value is particularly important to be viewed and interpreted only when the car is under full throttle input as lifting up on the throttle will result in funky numbers. Take your log in third gear (or higher if your local authorities will allow) from 2500rpm or so until redline. The values you will see are: 1 = 14.7:1 ratio, .85 = 12.5:1 ratio, .75 = 11:1 ratio. As you have probably figured, simply multiply the lambda value by 14.7 to obtain the ratio. A car that runs 14:1 (lambda value of about .95) all the way up to redline on increased boost is running a bit lean. Conversely, a car that is running 10:1 (lambda value of about .70) from idle to redline is running a bit rich. Remember that lean is your ultimate enemy. Running too lean for too long will spell disaster for the motor. Ideally you would like to see the A/F pass linearly from the factory 14.7:1 at idle towards 13:1 in the mid rpms (3500rpm or so) to at least 12:1 at redline (NOTE: New FSI platforms are running approximately 10.5:1 at WOT). This would show a car that is getting good fuel mileage under easy driving, but richens up nicely as you wind it out under full throttle to redline. This would make you feel at ease driving the car under high load conditions at high speeds (freeway cruising at 120mph) or using the car for frequent track days.
Example of manifold injection performance tuned a/f ratio readings: (NOTE: New FSI will request richer mixtures than this such as Lambda = .75 up top):
RPM Lambda
2500 .99
2750 .95
3000 .95
3250 .95
3500 .90
3750 .90
4000 .90
4250 .85
4500 .85
4750 .85
5000 .85
5250 .85
5500 .85
5750 .85
6000 .80
6250 .80
6500 .80
6750 .80
