Request Turbocharged Cars
#28914 from Harper Sharpe · Recommended to the Board · Minutes (2020-12 Fastrack)
In IT, GCR Section 9.1.3.D.3, insert the following and renumber following sections as follows:
"3. Turbocharged engines (only)
The following rules are specific to cars equipped from the factory with turbocharged engines and classified in the ITCS. Section
D.1 applies except where there are disagreements between section D.1 and these rules (e.g Exhausts and Intakes), in which event
these rules take precedence.
a. The Turbo must be identical to the original stock turbo fitted from the factory.
b. Exhaust system shall remain as stock from the cylinder head to the turbo outlet. Exhaust system tubing after the turbocharger
may be no larger than the factory exhaust tubing. Catalytic convertors may be removed.
Show 7 more lines
c. All intake tubing from the air cleaner to the turbo and from the turbo to the throttle body including any intercooler(s) must
remain stock or stock replacement parts. Stock air metering device must be retained in its original location and housing.
d. Engine control unit (ECU) and calibration (AKA tune or map) must remain stock, no aftermarket tuning, or alternate ECU Is
permitted. Factory ECU updates such as those done in accordance with a recall or service bulletin from the vehicle manufacturer
are permitted.
e. A port for measuring intake manifold pressure must be provided and available for scrutineering use. This port shall be capped
or plugged when on track."