so confius lah bro...i read in sepang website....different exhaust cant open..here attach the regulation:-
Category FX: Avantech Street Legal Machine Class (Turbo On The Road)
1. Engines must be 2000 cc and below.
2. Turbocharged.
3. Rotary engines are not allowed.
4. Variable Valve engine is allowed.
5. Nitrous Oxide System (N.O.S) system is prohibited.
6. Tyres are open except for Full Slick tyres.
7. Car must posses a valid road tax.
8. Interior and exterior must be complete and present. (Dashboard, front seats, rear seat, speaker board, door trims, rear mirror, carpets, panels etc.). Only front hood is allowed to use non OEM material.
9. Racing fuel tank is not allowed.
10. Complete exhaust system is required from header to rear muffler.
11. Wind screen, side windows and rear screen must be made of glass. Other materials used will be not allowed.
12. Head lights, rear lights, front and rear bumper must be in perfect condition.
13. Safety is very-very important. Any car found lack of safety features will be prohibited from entering this class
Haha...so how ?can xplain which de true?