Ive never seen a cooler tube blow up like that. I would almost consider pulling it out to see if that one tube was blocked at the outlet end to cause such a failure.
30 seconds at 2500rpm full throttle.
Longer tests were done but the temp basically stayed the same from this point on.
At higher boost the temp didnt rise as fast as I expected.
Diesel Tuner - did the extra boost tidy up the black soot? Always nice finding that sweet spot between high temp and clean exhaust...
Hope my cooler tubes can handle it