![]() ![]() This pipe utilizes a genuine OEM rear mounting flange for a secure fit to the stock (or an aftermarket) exhaust system. This mandrel-bent 3" OD racing pipe is a direct bolt-on replacement for the stock catalytic converter section. #EHAUXT MIDIPIPE FULL#Racing Beat also offers a full 304-stainless steel catalytic converter replacement pipe (without presilencers) or resonated catalytic converter replacement pipe (with presilencers) for RX-8 racing applications. Although the sound output is notably louder than the stock system, particularly under full throttle, this system can be used for daily "street" driving for those that desire an exhaust that produces a louder, more exotic and aggressive exhaust note. (The exhaust outlet does not extend through the opening in the rear bumper.) As compared to the stock system (39 lbs), the RB Race System (26 lbs) offers a 13 lb. The Racing Beat Race Exhaust System for the RX-8 is designed to offer a substantial weight savings over the stock exhaust system and conform to a 92 decibel sound level limit.* The single outlet tip is angled downward to further deflect the exhaust note. Refined and modest while cruising aggressive and authoritative under acceleration - that is the balance that we strived to achieve! But, jump on the throttle and the exhaust should come alive with an aggressive note that enhances the driving experience. ![]() Cruising speeds should not produce any droning or buzzing tones, but provide a deep melodic tone that doesn’t distract from the driving experience. The exhaust note that we envision for this car should provide a modest sound level increase over stock, but any harsh or "tinny" tones should be suppressed. Just what is "unacceptable"? We assumed that an individual that has purchased a RX-8 is seeking an exhaust note that reflects the character of both the car and the maturity of the car owner. ![]() Too much sound dampening would rob power too little dampening would bring the exhaust note up to unacceptable levels. Utilizing our in-house dyno test facilities, Racing Beat’s design team spent considerable effort to fine-tune the internal canister design of our muffler canister to provide what we believe is the ultimate rotary exhaust note! During development of the exhaust, we worked extensively to find the optimum balance between power and sound level. polished 304 stainless tips for an aggressive look. The stainless steel muffler canisters are finished with 4" O.D. tubing and features cast stainless steel flanges for positive exhaust gas sealing. The replacement connecting-pipe is manufactured using 3" O.D. Our system consists of a 304-series stainless steel Racing Beat connecting-pipe, muffler canister, tubing, flanges, and outlet tips. The Racing Beat REV8 street-legal, cat-back exhaust system is the perfect replacement bolt-on system for your stock RX-8 exhaust - a durable assembly offering a real horsepower gain over your stock unit. We still have hope that continued research in exhaust porting may provide performance improvements, but there are very serious restrictions to the shape of the port profiles caused by the way the side corner seals move across the ports. This causes the engine to be insensitive to exhaust tuning - the pulses are less sharp and the return path is less direct to the chamber. The main restriction is still there - the exhaust ports. The "negative" side is the that removing the muffler provides very modest power gains. Thus, the catalytic converter and exhaust can be made of less expensive materials and the muffler can be less restrictive while still offering a "streetable" exhaust note. This means that exhaust gas temperatures drop from 1800☏ and more with peripheral exhaust ports to roughly 1600° F now. The reason this is "positive" is that it softens the exhaust pulses and cools the exhaust. #EHAUXT MIDIPIPE FREE#On a positive note, side exhaust porting opens slow, closes slow (relative to peripheral exhaust porting) and causes a substantial pressure drop in the free stream of exhaust where the flow has to make some awkward turns out of the combustion chamber. This style of porting has both positive and negative consequences. The largest difference between this engine and all previous Mazda rotaries is the side exhaust porting. The RX-8 Renesis engine is a remarkable combination of detail improvements that have been developed over many years. A cat-back, emissions legal exhaust system is one of the most popular upgrades for the RX-8. ![]()
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