Yes, the car could have pink/yellow 15R circuit
In SCCA ITS we must run "blueprinted" stock engnes. So yes I run stock intake. Would love to run the "evo" intake & electronic injection. Good for 30 hp!!

Right now I'm building a 2.5 engine for my 1986 16V street car. Would love to make 200 HP at flywheel!

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator