That was very luck and a close call for you chaps 
I wounder what happande to him and why the engings went bag in the first place?
There is always an underlaying issues when they go bang, even more so then the keep going bang.
In the summer we had a young lad on ukmivs had an AUM which was on its 3rd engine I think, since his CC stage2 remap, I think he came to us se we would point blame at the CC remap, lol far from it I told him it was an issues else where and he looked shocked? how could it be on 3 engine? I said to leave the car with us and i would find the cause, after 30mins I found the fault to be the actuator body bent which was jamming the waste gate totally shut do the ecu had not controll of the boost and could not limp the engine. IMO this fault was caused during a clutch change, which cause the 1 engine to blow, them they bolted the old turbo back on to the 2nd engine and band and so on.... Its comedy we see it every week.
I could have said yer its the map, we will map it again and it will never happen again..and made CC look bad in the customer eyes....but we aint like that we knew it was the car and not the mapping, just a shame other compaines are not like us.
Then he went out in an r-tech remapped car and that changed very thing...

As far as i know he is still on his 3rd engine and loving the R-Tech power..

I can go on and on with stories like this.
Another one,
I got a call from guy a few weeks back a month or so after we remapped his AGU, he reported a missfire under load which we told him was his ignition amp which it was he fixed and was happy, then yesterday the same guy calls and says his MPG has started to drop, which we said CTS, he says is local tuner in Lichfield told me you have remapped the car by using lemmiwinks (google it to find out about it) via the obd port...wtf which only changes the fuel and boost a small amount an this is why is started to over fuel, the remap is crap as and the only way to tune the AGU with a full map is take the ecu out and fit a new chip. The lichfield tuner was keen to take money off him for a new chip tune remap, but didnt mention about the CTS??? Looking for the tuner in lichfield who I can give a phone call to and rip him to bits...

As far as I know they can tuner every make and model out there so IMO the are already crap.
Now can you see the point I am getting across?

Nick