The NMRA Technical Committee released a rule adjustment today in Limited Street. Adjustments include a base weight change for the 5.4/5.8L Supercharger (Roots/Screw) combinations. These amendments go into effect immediately, unless otherwise noted in this document. The 2020 NMRA Class Rules and all Rule Revisions/Clarifications can be found here: www.nmradigital.com.

Effective today, March 23, 2020 - All turbocharger compressor covers will require inspection and approval by NMRA/NMCA Tech before they can be used in NMRA/NMCA competition. This includes turbocharger compressor covers that have already been used in competition. Classes that this affects are: NMCA XTREME PRO MOD NMRA/NMCA STREET OUTLAW NMRA RENEGADE / NMCA XTREME STREET NMRA LIMITED ...

The NMRA Technical Department has made the following rule clarification in the Limited Street Class: All TVS 2300 (2.3L) and TVS 2650 (2.65L) superchargers must have factory location mounted throttle body. Rear-mounted throttle bodies are prohibited. All other permitted combinations in the NMRA Advanced Fuel Dynamics Limited Street class will remain unchanged. This rule clarification will g...

July 17, 2019 - The NMRA/NMCA Technical Department addressed turbo modifications in 2019 class rule sets and again in a statement on March 26, 2019. Over the last few months, the NMRA/NMCA Technical Department have seen several turbochargers (not in competition) that feature modified turbine wheels. This type of modification is highly susceptible to failure due to the center hub being cut-down fro...

June 6, 2019 The NMRA Technical Department and Ford Performance engineers have researched and discussed several areas of concern with the Gen II Coyote Stock engines with racers and engine builders. The extreme conditions of the category can result in issues that might affect power and/or performance. Due to these findings, the NMRA Tech Department will allow the following components to be r...