DR AP MP vs ExoticSpeed Catpipe dBAs
I just wanted to give everyone out there a comparison of volumes for these two midpipes when paired with an Agency Power exhaust. Now I'm not going to sit here and claim this is a really scientific test as its not all on the same roads, there is no stock exhaust comparison, etc, but I hope that someone finds it useful.
For testing I used a Radio Shack 33-2055 Digital Sound Level Meter held by me in the front seat pointing towards the back of the car, using A-weighting (see A-Weighting Wikipedia article for explanation). I tried to take at the average dBA for each driving situation I listed below. My car is a 2004 GT with the stock Potenzas, a K&N drop-in air filter with the sound baffles and 1 screen removed, the Axial Flow short shifter, stock header, compared mid-pipes and the Agency Power exhaust. I'm quite sure that all of the sound levels I picked up were from the exhaust note as it is quite overpowering but if you don't believe me I imagine there are others will attest that it is pretty loud. As for the sound tests I did all of the tests on the drive I take home from work, using cruise control, and took the levels on the same roads in hopes of reducing any differences in road noise volumes. Agency Power Dual-resonated mid-pipe ~65 dBA @ idle ~74 dBA @ 45 mph ~85 dBA @ 70 mph ~88 dBA @ 75 mph ~90 dBA @ cruise control accelerating around 4k rpm (like a tick up on the CC speed) ~88 dBA @ 7,000 RPM engine rev ~96 dBA maximum volume ExoticSpeed Cat-pipe ~62 dBA @ idle ~72 dBA @ 45 mph ~80 dBA @ 70 mph ~82 dBA @ 75 mph ~90 dbA with cruise control accelerating around 4k rpm (like a tick up on the CC speed) ~88 dBA @ 7,000 RPM engine rev ~94 dBA maximum volume I was hoping for more noise reduction, but maybe the AP exhaust is a larger part of the equation than I had originally thought. I took a ride in Swoope's car to test his volume level, but with his setup it was so quiet it wasn't even worth taken out the sound level meter. As a side note, the exhaust sounds phenomenal (albeit far too loud for daily highway driving) and the ExoticSpeed Cat-pipe has gotten rid of some of the raspiness that the Agency Power mid-pipe had introduced. Again, I realize it isn't the most scientific approach so please keep the flaming the a minimum. |
If only all threads started like this.
Data we can compare :) Good to see an improvement, but sorry you are not at your desired db level Maybe we will see Swoope's Mid-pipe in action soon enough ;) |
Yeah I'm thinking it may be the AP exhaust itself as I mentioned, I'm considering tossing the stock muffler setup back on until I pick up a turbo. :banghead:
|
Aww , i wanted an exoticspeed catless midpipe and agency power DR MP comparison. Thanks for this info though im sure people will find it useful :). The dual resonated should be less raspy then the catless exoticspeed mp right?
|
Originally Posted by 636
(Post 2929964)
Aww , i wanted an exoticspeed catless midpipe and agency power DR MP comparison. Thanks for this info though im sure people will find it useful :). The dual resonated should be less raspy then the catless exoticspeed mp right?
|
Oh i was wondering if the catless exoticspeed had less rasp then the agency power dr mp. Was this comparison with the cat? If you were talking about catless , then im surprised by the results lol. I would've assumed the dual resonators would make the tone less raspy by far >_>. Would adding a header change the results?
|
It was with the High Flow Cat and the AP DR Mid-pipe
|
All times are GMT -5. The time now is 11:31 PM. |
© 2024 MH Sub I, LLC dba Internet Brands