now lets look at this realistically
02 ex = 16.8 1/4 times ... the ex does not really have a powerband
add an intake and pulles... maybe add 6 -9 whp... drop your times to a 16.7 ??
stock b16 si = 15.6 has a powerband the only way i see a b16 si losing to an ex w/ basic bolt ons is if the si had a blown head gasket / warped head..
was misfiring on 2 out of 4 of the cylinders..... or maybe he used ebay mods and ****ed up his motor....
OR *and my favorite reason* didnt realize you were racing and just drives his car kind of rough and you raced somebody and won who didnt know they were racing.