Good-Win Racing Mazda Performance Parts

Racing Beat Sport Miata Exhaust Connecting Pipe


Miata 1990-2005 · Exhaust · Mufflers

Part Number: 11-1008B

Application: 1990-1995

Price: $137.00


Racing Beat Sport Miata Exhaust Connecting Pipe
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For Miata owners that prefer a more aggressive sounding and lighter weight exhaust system, the Sport Connecting Pipe can be used with our Power Pulse Muffler. Unlike the connecting pipe that that is intended to accompany the Power Pulse Muffler, the Sport Connecting Pipe is NOT equipped with a presilencer. Produced from 2.375" OD 304-stainless steel, this connecting pipe will offer years of performance driving.

Many people ask just how much louder the Sport Pipe is as compared to the Power Pulse Connecting Pipe. For comparison purposes, we undertook a series of decibel readings to record the sound level outputs.

Test Parameter

We used our 1990 RB Miata (1.6 liter) in this test. The car is equipped with a High Flow Intake, Racing Beat 4:1 Header, and Power Pulse muffler. The different connecting pipes were installed and the car was lowered to the ground prior to testing. Using a handheld decibel meter, a sound level measurement was taken at a 45 degree angle, approximately 18" away from the muffler tip, The measurements are as follows:

Power Pulse Pipe (with presilencer)
Idle: 74db
3000 RPM: 82 db
5000 RPM: 87 db

Sport Pipe (without presilencer)
Idle: 75db
3000 RPM: 89 db
5000 RPM: 92 db

(Legal limit for California is 95 db.)

Next, the Racing Beat sales staff drove the car to obtain subjective opinions on the sound quality of the Sport Pipe configured exhaust.

Evaluation: We were quite surprised with the sound output of this Sport Pipe! Quite frankly we were expecting to hear a harsh, buzzy tone without a presilencer, but this was not the case. Although the sound seemed to increase sharply at 3000 RPM, it was NOT harsh or buzzy but retained the deep, throaty tone that was similar to the resonated connecting pipe. Even though it was louder, we all agreed that the sound was "streetable" and still retained the sound quality of the Power Pulse system. Conclusion: A lighter weight alternative to the resonated connecting pipe, the Sport Pipe offers a modest sound level increase over the Power Pulse Pipe, but in our opinion this pipe is adequate for street or track use.

*** Product images may differ from actual product appearance ***


Brian, just wanted tyou to know you've got another highly satisfied customer. I got my RoadstersportIII muffler on Friday, installed it in 20 minutes, looks and sounds awesome. I like the baffles out!! My new tires/wheels came Saturday, just got them on and test drove them. Fantastic!! And how they look--- just what I was after. I will add the front "mud flap" that looks like the rear one, for some stone protection, but the offset was just what I was working for. I'd love to send you some pictures for your photo gallery. If you'll send an adress via e-mail, I'll send some high-res photos showing clearances and side profiles, etc. The graphite spokes and polished rims really set well on my black car. Thanks again, me and my wallet will be back!!

-- Ken

The Konig Lightspeeds are incredible. Perfect and the best price in the market. Thanks Chris and Robbie