eruption isn't even worth a OO mention the fact it has to be quiet (since it only gets eruption via a gen 4 thing that locks it into quiet nature) and heatran only goes 227 max with quiet with scarf that only out-speeds +speed base 105s by a point there are no 105 base speed mons in OU and the other stuff you do outspeed are not staying in on heatran or are not bothered by it.
and trying to use it on Trick room team still has problems has for one it's weak to breloom ever more common tech mach punch which would bypass trick room.
<Misty> NOBODY EXPECTS THE SPANISH CHOICE BAND JIRACHI INQUISITION.
<Surgo> when a man whips out a pink DS and pokemon, you know he's not afraid of anything.
<capefeather> explosion got ruined by the bad economy