Modifications:
Modifications will be strictly controlled according to the following rules:
The only tyre allowed will be the control tyre: S1.
All cars will start with a base setup as follows: sports suspension, sports exhaust, chassis refresh (optional), oil change and roll cage (opt).
At each track, competitors will be allowed one further modification of their choice, which must only be one level higher than the previous spec.
The following mods are not allowed: stage 4 turbo, no gearbox mods, no nitrous system S1 tyres only.
Budget Division cars will start with a stage 1 NA tune, unless they are turbocharged as stock, when they will start with a stage 1 turbocharger.
Budget Division cars will also start with a racing flywheel.