Prep Differences Between SM and ITx

[ner88]

how about "different"

It's no secret that guys are getting 125+ whp from 1.6L SMs - all that development has benefits. plug a whistler up and you get 4 cylinders with the same #, made possible by the head work. those are the ones with the head work figured out by the likes of Race Engineering/Ti/East Street/etc... IT mods "should" add up to similar gains. combine the allowances and I bet 35% over stock is realistic.

But if you combine the two the motor is not legal for either class.

My thinking is more in line with policing the class. You can't assume every SM car has the motor built to SM specs, if it is how much will it effect performance?