National Staff Greg G. Posted March 4, 2008 National Staff Posted March 4, 2008 Technical Bulletin Mazda RX-7 13B: 1. Modification of the Variable Dynamic Intake (VDI) by removal of the actuator mechanism, and permanently wiring the VDI open will be a No-Points Modification. 2. Modification of the 5th and 6th port runners, by removal of the actuator mechanism, actuator rods, and removal of the sleeves themselves, will be a No-Points Modification. As well, removal of the actuator mechanism and actuator rods, and fixing the sleeves in the open position will also be a No-Points Modification. However, under either circumstance, if there is any filler material added, non-OEM sleeves added, modification of the OEM sleeves, or other modification to the runners, the car will need to be re-classed based on Dyno testing. Quote
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