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- All Mazdas!
We have released a new racepipe for the Rx8. The racepipe has several different options of 1 or 2 resonators. There is also an option of a high flow catalyst in the pipe as well.
We took a number of decibel readings for the RX-8 Racepipe in a dual resonated and single resonated configuration, there was very little difference between the two both in sound and in actual decibel ratings in various environments and at various load and rpm combinations. We found that effectively the dual resonator was only a shade quieter than the large single resonated version. The ambient sound tests were done in an open building with sheetrock walls and the road tests were done on city streets and on a freeway. High end sound comparisons between the two units were eclipsed by the sound of the K&N intake that our test car was equipped with. Both were quite similar, very little perceptible difference.
In the Shop:
20 Off Back Bumper dB Dual Resonator dB Single Resonator
Idle 64dB 64dB
2500rpm <80dB 74dB
4000rpm 95dB 95-97dB
Free Rev to 5000rpm 103dB 105dB
On Road, Windows Up
In Cabin dB Dual Resonator dB Single Resonator
Cruise 38mph 4th Gear 72dB 72dB
30% Throttle Accel 4th Gear 92-94dB 94dB
Cruise 60mph in 86-88dB 88dB
WOT 9000rpm 3rd Gear** 104dB 104dB
**(eclipsed by K&N intake noise)
Pricing structure:
$249 single resonator racepipe
$349 dual resonator racepipe
$449 single resonator, single high flow catalyst racepipe
Link for more information on the Rx8 racepipe
-Derrick
We took a number of decibel readings for the RX-8 Racepipe in a dual resonated and single resonated configuration, there was very little difference between the two both in sound and in actual decibel ratings in various environments and at various load and rpm combinations. We found that effectively the dual resonator was only a shade quieter than the large single resonated version. The ambient sound tests were done in an open building with sheetrock walls and the road tests were done on city streets and on a freeway. High end sound comparisons between the two units were eclipsed by the sound of the K&N intake that our test car was equipped with. Both were quite similar, very little perceptible difference.
In the Shop:
20 Off Back Bumper dB Dual Resonator dB Single Resonator
Idle 64dB 64dB
2500rpm <80dB 74dB
4000rpm 95dB 95-97dB
Free Rev to 5000rpm 103dB 105dB
On Road, Windows Up
In Cabin dB Dual Resonator dB Single Resonator
Cruise 38mph 4th Gear 72dB 72dB
30% Throttle Accel 4th Gear 92-94dB 94dB
Cruise 60mph in 86-88dB 88dB
WOT 9000rpm 3rd Gear** 104dB 104dB
**(eclipsed by K&N intake noise)
Pricing structure:
$249 single resonator racepipe
$349 dual resonator racepipe
$449 single resonator, single high flow catalyst racepipe
Link for more information on the Rx8 racepipe
-Derrick
