The Drone thread
- Thread starter NCSupraowner
- Start date
I got my eyes all over this.....
http://www.bicperformance.com/images/testpipe2.jpg
Either quiet as hell or loud as hell.
http://www.bicperformance.com/images/testpipe2.jpg
Either quiet as hell or loud as hell.
hmm thats weird...Ive had the 3" turbo back with no cat now for awhile and with the windows up i can barely even hear my exhaust. now while the car was down for some "goodies" this winter i went up to a 4" cat back.:naughty:s000pra89T;1221733 said:
well.... then again I also re-did all of my underbody coating a few years ago, along with sound deadening the entire hatch....a few extra pounds but a nice luxury.
I added a 2nd muffler (Vibrant brand) instead of a resonator (pic below). With the cat and 2 mufflers, my exhaust is not too loud. It does drone if the cruising RPM's are low, so sometimes I cruise at a lower gear to raise the RPM's and then I get no drone.
Apex'i makes a cool silencer for my N1 muffler. It has a valve and a spring that opens under higher exhaust pressure to allow more flow. My car was almost as quiet as stock with this silencer. They claim virtually no loss of power, although my car felt a little slower, but it might only feel that way because it was so much quieter.
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Apex'i makes a cool silencer for my N1 muffler. It has a valve and a spring that opens under higher exhaust pressure to allow more flow. My car was almost as quiet as stock with this silencer. They claim virtually no loss of power, although my car felt a little slower, but it might only feel that way because it was so much quieter.
gtsfirefighter
SM Expert on White trash
My exhaust is 100% stock. I can't even hear it running. :biglaugh: The only thing I hear going down the road is wind noise by the rear view mirrors.
My 86.5 had 3" exhaust from turbo back with a magnaflow dual tip and it droned bad running around town. On the open road it was not that bad but you could still hear it.
My 86.5 had 3" exhaust from turbo back with a magnaflow dual tip and it droned bad running around town. On the open road it was not that bad but you could still hear it.
NCSupraowner;1221885 said:
i have that muffler with a resonator on my NA 7M. sounds good, no drone at all.
Zumtizzle;1226500 said:
+1. I have an 18" resonator, a high flow cat and a Magnaflow muffler and it's great. Very little drone. Just a slight hum if I'm in 5th from 2000 to 2400 and it's not even that noticeable. At all other times there is no drone.
I have Madd Drone..Straight 3 inch from turbo back to greddy sp1...Does the Resonator make significant difference in sound control... Or should i just Add another Muffler ?
Drone is just a particular low frequency of the engine/ exhaust flow that causes the sound, similar to bass from a subwoofer. 7M's seem to drone more than JZ engines, i think its due to exhaust flow and piston stroke, as the 1jz particularly has a very short stroke (under square).
Most round can style mufflers like the Apexi N1, or Magnaflow will be louder and drone more than a oval style muffler. Remember, the bigger the muffler body the more sound it can absorb. If you look on the JDM jza70s' which 99% of them have aftermarket cat back on them, they are 3" and have huge oval mufflers and are just about as quiet as stock.....you can harldy hear thenm inside the cab.
Resonators will help and obviously a larger muffler body, when a cat is installed it also does tend to make it quieter and take more of the drone resonance out. Vibrant makes a great resonator and it fits in the stock location, which can olny fit about a 12" resonator. Tekdeus has it on his car and it made it alot quieter.
LINK: http://vibrantperformance.com/catal...id=47&osCsid=b744eca5e1b3e6de7fe1d254d81946d7
Randy
Most round can style mufflers like the Apexi N1, or Magnaflow will be louder and drone more than a oval style muffler. Remember, the bigger the muffler body the more sound it can absorb. If you look on the JDM jza70s' which 99% of them have aftermarket cat back on them, they are 3" and have huge oval mufflers and are just about as quiet as stock.....you can harldy hear thenm inside the cab.
Resonators will help and obviously a larger muffler body, when a cat is installed it also does tend to make it quieter and take more of the drone resonance out. Vibrant makes a great resonator and it fits in the stock location, which can olny fit about a 12" resonator. Tekdeus has it on his car and it made it alot quieter.
LINK: http://vibrantperformance.com/catal...id=47&osCsid=b744eca5e1b3e6de7fe1d254d81946d7
Randy