2015 V6 Mustang w/ Bolt-on Mods, What is My Class?

[Klarebearstare]

Hi,
Recently, I installed an aftermarket exhaust kit (long tube headers, catted h-pipe, and catback exhaust) on my car. I was in the DS class, where does that put me now?

[xopher65]

The exhaust mods put you in Street Touring: STU
As long as the mods fall into this:

Exhaust manifolds, headers, downpipes, and associated EGR tubes may
be replaced with alternate units. Exhaust exit may be relocated provided
it meets Section 3.3.3.B.16. Relocation of the oxygen sensor on the header
is permitted. Exhaust heat shields which cover only, and attach solely to,
these parts may also be replaced, removed, or modified. All other exhaust
heat shields may be modified the minimum amount necessary to accommodate
allowed alternate exhaust components. Mounting brackets/hardware
which serve no other purpose are considered part of the exhaust
components.

[510]

Sounds like you should be legal for STU = Street Touring Ultra or STP = Street Touring Pony Car or CAM-C = Classic American Muscle Contemporary.

Pax numbers are:
STU = .824
STP = .815
CAM-C = .816

So if you care about PAX then STP gives you the best chance.

Going forward with additional mods you should probably have a read of the rules for those classes - they have quite different allowances while still remianing on 200 treadwear tires. CAM-C allows the most while still retaining a decent PAX