running low boost levels and I assume with a JWT program. You aren't going to hurt the engine at that low of a boost level with a JWT program unless there was already an issue with the bottom end of the motor. I know you say it was untuned, but the boost levels you were running were not high at all. You dont have to tune a car with a JWT program at that boost level - even with a leaner mixture, the probability of detonation is actually pretty low. It isn't until you start getting into 16+psi of boost that things become more sensitive. There was something else going on there other than it being untuned (else you are suggesting that the JWT programs will blow up your motor unless you tune them, which I wouldn't agree with).