So had my Mustang with 2.3 whipple,e85 and most supporting mods besides forged internals. So it was running good before I took it to him I had just wanted to make sure it was running good. Car was previously tuned in Denver and altitude had changed so didn't want to take any chances. He told me the previous tune was lean I think like 12 something and it was knocking around 7k rpm. He adjusted the afr to mid 11 and the rod snapped at 6200rpm at 653hp.. Is he just a shitty tuner or had the damage been done already with previous tune and finally busted when he ran it? Just pissed because I'm out 400 bucks and now gonna spend 5k for a built shortblock which I don't mind it's just a lot of money at the moment..