11-03-2016, 05:05 PM
Normally never flame/bang/fart unless provoked by cracking the throttle at around 4-6k RPM on the overrun. The management is calibrated well enough that it doesn't really do that, sometimes you'll get a very slight whiff of flame/black smoke when lifting off at high RPM, but usually not.
If it did before, it's likely it had an air leak on the inlet side causing it.
If it did before, it's likely it had an air leak on the inlet side causing it.