Sentinal Ability Query

Priming with a tech ability will result in the corresponding tech combo (fire, tech or cryo.)

Priming with a biotic ability (like Throw) will result in a biotic combo.

The detonator's nature is irrelevant, but any combo bonuses are determined by the detonator.

Ammo primes for the corresponding combo (eg. Incendiary primes Fire Combos.)

I don't believe there is any equipment that directly boosts combo damage (but I have only had access to a months' worth of items, so there may be something from the first few months the game was out.)

I believe you can buy a tech damage enhancer (works on Energy Drain) and perhaps the Biotic Commando is still there (+10% gun damage and +20% Biotic damage.)

The Expert Package would work very will with a good priming pistol, as it improves refresh speed (refresh speed is about as close as you get to increasing combo damage with equipment, albeit indirectly.)

good stuff, thanks for the feedback!

Good info there JRandall.  Thanks.  I didn't know this before.

Everything I learned was from peddro's numerical testing thread.

You are mistaken though, unfortunately. Power boosts only boost the powers, primers and detonators, but not the combo itself. Passives are the only way to enhance them.

Sidenote, atm all powers without combo bonusses have the same combo damage except for shockwave. SW detonates for a multiplicative 50% combo damage.

Things that affect combo detonations are all clearly labeled to do so. One of the few parts of the UI/text that is actually correct.

Combos primed by ammunition are classed as combat detonations.

Throw does prime for combos at base (~0.5 sec), so if you land it at the right timing with energy drain you can get a biotic combo.