Replaced my Corsa Sports (not loud enough) with the B&B Bullets. Kinda scary at start up! Really a deep pitched rumble. Great burble (if you like burble) To get to the point-I have an A4 coupe. There is some really major resonance that with the top on and windows up is almost painful. Seems most obvious as it goes from first to second and second to third. Cruising at fifty and then accelerate and it gets really noticeable again. With the top off-not so bad.
Wonder if there's anything to lessen the resonance. What part of the system is causing it-H pipe, over the axle pipe? Would using exhaust wrap on some of the tubing help?
thanks James

 

same problem here except i have the mn6. i also installed the bb x-pipe. you can some dynomat under the carpet in the trunck (don't forget the little cargo boxes). exhaust wrap won't help, much, it will change the sound a tad but won't really do anything for the resonance/drone. it gets ok for me around 1700 - 1800 as long at i'm not going uphill or have the engine under load.

i believe the noise is generated from the over the axle piece. at the top of the over piece is the resonator but imo the exhaust has already slowed/cooled and encountered pressure since it hits the angle then needs to go up.

i love to see how an under the axle or a smaller (smoother) hop would work

 

Good idea on the Dynomat thing-used it on C4 when I was into the car audio thing-have you tried it yet? (I know the stuff ain't cheap).

 

Initally, I DO understand why you guys want LOUD, but in the end, I just do not understand why some guys still purchase something which you KNOW, totally ruins the Corvette ownership experience..... "almost painful".................. does not sound like ANYTHING I would want to purchase.

You are not the first person to speak out against B&B Bullets, after the purchase.

There are those who do like them, but I'll bet in a few years, they will be wishing they had a bit less "drone" and a LOT less NOISE!

Personally speaking, I think you just made a major mistake in getting rid of the best non-resonance exhaust made...................

In the end................each to his/her own...............free will, it's great isn't it?

And, fortunately, we have the Corvette Forum which helps us by giving us great feedback on various prouducts.............

 

Gee, I ask for some help and I lectured to-thanks I needed that! I bet you have no sense of adventure.

 

I just had my bullet installed last week and I love it. I love to drive around and show off that deep sound of pure muscle. I guess everyone has there opinions.I'm young ,so for me the louder the better.

 

The Bullets are totally awesome! I have the X-pipe which helps take away some resonance and have found that the tone deepend as they got a good amount of miles on from that of the first week or so after install. The Bullets for me made the car sound the way it should, now i can be louder than a fart pipe honda. But yes the Bullets are definitely not for everyone, such as the person that posted his slight lecture above, the Bullets scare some people I have noticed, but hey thats one of the reasons I got em!

 

I think the only fix is a different muffler. Corsa, Borla and Magnaflows all have less drone.

For me stock did not sound like a Corvette. After test driving other types of exhaust I installed Magnaflows and Kooks. A little more of an European sound. No drone and no interior resonence.

my 2 cents

 

If you think that's bad, imagine the teeth rattling resonance I got from my C6 A4 coupe with B&B Bullets AND HEADERS! Now I love a deep muscle car sound as much as anybody, but to sit in that car from 1000-2000 RPM was damn near painful. I too started with Corsa Sports but found they weren't aggressive enough, so I put on the Bullets because I had heard good things about them on C5's. But there's something different about the C6 application, particularly A4's, that produces horrible drone. Kind of that ricer fart can noise at great volume in each ear! The Vette Doctors, who did the install said I'd never be able to sit in the car with this crap sounding exhaust and they were right! So off with the Bullets and on with GHL's. The GHL's were exactly the sound I was looking for. It just took me 3 tries to get it right!

 

Me agree. Most don't realize the increased "noise/drone" will detract from the driving experience in the long run -- I know from experience. I love a "great" sounding exhaust but the aftermarket systems produced for these cars have more of a raw, muscular, loud sound that I find fatiguing.

 

This is not a lecture . If you have resonance, I doubt that an x-pipe will do a damn thing for it. And dynamat won't help either. If you like the sound then more power to you If you don't, do not waste more money on bandaides. Use that money for a different exhaust system.

 

I had Bullets on my C5, and a close friend has them on a C6 convertible, and I have also ridden in another C6 coupe with them. I personally like the sound, but no question that there is a trade-off.

The guy who had the coupe I rode in also had a "painful" experience at certain speeds/rpms. He blames it on a bad ear caused by a lot of hunting (guns). Interestingly, his wife actually liked them, and did not sense the resonance he did (and they are both in the early 50's, as am I).

When I rode with him, at one point, he said "see that, my ears are in pain right now". Don't get me wrong, I could hear the exhaust, but they were not offensive to me (or his wife at that speed, obviously). So, it goes beyond just preference, some peoples hearing is effected differently.

Now, on to a possible fix. I had suggested once that the perfect system might be Bullets with the Corsa "touring" resonator installed in the X pipe (look it up). And I have now been told that B&B may be working on an X pipe with a resonator built into it just for this purpose. I'd call Mike at B&B and ask if they are indeed working on that.

 

Something that doesnt seem to get mentioned much is the cars use. What wont bother you on your fun run toy can make you want to slit your wrists on a daily driver. If my car was not a daily there is no question it would have got something more aggresive than the Corsa's. It is however and the Corsa's are easy to live with. They really dont resonate. I didnt fully believe it till I had em installed. They are genuinely mellow at cruise. I have to say I often wish they would bark a little more. Still, Im glad I went the way I did. I hate to say it but I think that when you choose an exhuast your making a compromise. You have to go one way or another and if your like me you wont really be happy either way. Anyhow, have you considered getting something more in the middle ground? You went from one of the more mellow choices to the uber loud. Perhaps something like the stingers or GHL might give you enough sound without crossing your resonance threshhold. Hopefully Im not suggesting something that might get the wife considering the Bobbit treatment.

 

It's not easy to admit making a wrong choice, especially after spending your hard earned money. But getting the right sound is an important part of enjoying a car like a vette.

 

exactly

 

Wrong. xpipe will reduce the majority, of it.
I've done both with and without, the xpipe. No question, the xpipe works, for this problem/concern.

 

Just changes the pitch, could wind up being worse for some people.

 

don't get me wrong, i love the bullets. just wish i could switch between touring and sport mode. oh wait, that's almost what they got on the new z. the bullets are actually awesome. i'm 37 and still enjoy muscle cars but a long highway cruise can cause headaches if there's too much feedback from the exhaust. i was down in tennesse the other day and kid on a crotch rocket pulls up behind me. i was sitting along the side of the door, g/f was getting something to drink. i'm just sitting there idleing and he revs it a few times. so i rev it, back and forth.. damn. them bullets are sweet.. they could feel the exhaust pulses against their chests. people can feel them when you pass at speed (esp. smaller lighter cars). i just wish they were quiet in the cabin unless the windows were open. that whole car low fequency vibration (sounds/feels like you are deep underwater and a larger generator is running somewhere) can really get to you every once in awhile.

i think, i also saw that random technologies was working on a set for the c6 that has responators in the x. i think it's a complete 3 inch over the axle system from the headers or the other set is 3 inch from the stock cats.

also btw: the other folks are correct. dynamat, etc. won't really do much to get rid of the drone. only thing it really does is to tighten up specific pieces, which in turn causes a larger vibration area. this will change the cabin dynamics a bit but mostly just take it to a deeper frequency.

the problem is the c6 is airtight. you are inside a drum. wonder how it would work if the over the axle ended at the top of the axle and came out behind the rear wheels. what would it do to the paint, etc. shouldn't the exhaust flow free'er since the pipes exit would have lower pressure. the exhaust would exit the cats, flow down the x, it would then go up to the top of the axle then turn up and out so it exits right above the top right rear section of the wheel.

 

call Billy and ask him about cones

 

cones ???