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Discussion Starter · #1 ·
Hey whats up guys, im getting into autox and signing up for my first race. Im having trouble figuring out what class to sign up for. Right now my car is stage 2 with an intercooler, cat back exhaust, intake and tune. All the suspension is stock and so are the tires. From what i was reading it looks like i should be in smf. I just wanted to be sure before I fill out the registration. Thanks
 

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DSP or SMF
 

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I would back off to SMS if you aren't running slicks. The PAX is much nicer; SMF is super rough.
 

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DSP would work as intercooler changes are allowed and it has a better pax than either of the SM classes that were mentioned.

Section 15.10.3

As utilized only on engines originally equipped with forced induction,
induction charge heat exchangers (also known as “intercoolers” or
“charge air coolers” [CACs]) are unrestricted in size and configuration.
Air-to-air CACs and radiators for air-to-liquid CACs must be cooled only
by the atmosphere except for standard parts.
 
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