Zero Drone!

[TurboBob]

Gotcha, in fact the Kenne Bell catalog from eons ago showed their version of this
installed just before the muffs (I think)........

I'll give it a try......

Thanks for the data


Bob

 

[TR Custom Parts]

I gave one of those Dynatech Vortex Insert cones on my GN with the 3" single shot and it seems to quiet it down a bit but still annoying. Jack Cotton warned me that it was loud but figured I could deal with it. These inserts are available from Jegs and they are $60! I shoved in the end of my test pipe so I still open the dump without any restriction. Wish I had a db meter to see if it made a real difference or not. Not worth the $$$$ in my opinion but was worth a shot.

 

[TurboBob]

Now we're getting somewhere.

And I HAVE a db meter (35.00 at radio shack...) my drone maxes at
80db.... 60mph locked in 4th.....

But at least I can tell with certainty if changes are headed in the right direction.

Are the Jegs thingies 60.00 a pair or apiece.....? (I need 2)

Bob

 

[CaPPY]

BuickGNBoosted,

Check out the SUPER TRAPP DISC-ONLY ADAPTER KITS! You weld a 3" cap on the end of the pipe and put the diffuser discs inside to quiet it down for the street and take the disks out for the track.

I saw them on a Yenko Corvair and they worked!

I know they're in Summit's catalog, don't know about Jeg's.

 

[GNZero]

I bought the ATR 3" crossflow system and the drone was pretty loud. Added the rear seat frame brace and that quieted the drone a bit. Guess it stiffened up the body so it didn't resonate as much. Swapped the stock turbo for a a TE-44. That seemed to lower the pitch of the exhaust and made it seem quieter. Next I put on a THDP and once again the the pitch of the exhaust went down and now it's pretty quiet in the car... until you get on the gas!

Greg

 

[VIN7]

Has anyone tried the two different types of mufflers at the same time yet? This is done from the factory on the Mustangs and I believe the Impala SS also. Those that have swapped mufflers should have something laying around

Mike

 

[stickybones]

I thought of this, but haven't tried it. Maybe someday. I just ordered the Hooker system (hoping it's quiet). I now have SS UltraFlows on the car. If the Hooker system annoys me, I may try a mix of one Aerochamber and one Ultraflow.

 

[TR Custom Parts]

TurboBob, those cone inserts are $60 each

 

[AsphaltAnihil8r]

Originally posted by VIN7
Has anyone tried the two different types of mufflers at the same time yet? This is done from the factory on the Mustangs and I believe the Impala SS also. Those that have swapped mufflers should have something laying around

Mike

You will need to different shapes of mufflers,,like a round and oval,if they are both the same shape the drone will still be present ,,having to different shapes will not add to the same Frequency