I'm going autocrossing for the first time this next weekend, and realized I have no idea what class my car is in. I was reading through the class definition listings, and it seems since I have a cat replacement pipe I'm fairly far up in the classes (the lower classes just cover catback stuff). I also have internal engine modifications (Pineapple inserts), which I have no idea where they fit.

1988 NA S4 FC
Pineapple racing 6th port inserts
Racing Beat cat replacement & presilencer
Racing Beat street/strip performance clutch & pressure plate

That's about it for mods. What class would this be?

-=Russ=-

 

Street modified 2 is my guess, otherwise a straight mod class EM I think. If you're just starting out I doubt anyone would say anything about you running in E Stock. We're pretty casual with the noobs in my region.

 

Since the ports are outside the engine you should be fine in FP. CSP maybe, I don't have a rule book handy.

 

CSP. The 6th port inserts are effectively bolt-ons. Equivalent to porting and polishing heads on a boinger engine.