FWIW I've been running 8 psi. on a Vortech with a good, SAFE custom tune for a while with no issues.
A lot comes into play on any SC'd engine with custom tuning but most of the issues I've seen with popped motors are either too much timing or too lean of a tune.
A lot comes into play on any SC'd engine with custom tuning but most of the issues I've seen with popped motors are either too much timing or too lean of a tune.