Exhaust thoughts??

[Pete]

Originally Posted by LantanaTX

So C6 Z06 tips and flappers work well on B&B 3" system? I am buying a ZR1 next Saturday in Denver and driving it back to Dallas. Car currently has the 3" B&B system and the current owner says it is really loud. I hope 12 hours of droning doesn't drive me crazy!

LantanaTX, if the car has 4.10 rear gears doing 70-75mph you'll be fine.
Try and keep the RPM's above 1800.

The NPP flappers do not eliminate drone just cut it down to maybe half.

Pete

[XfireZ51]

Drone can be mitigated in a few ways. You'll find that if the motor is running "fat" or rich, you'll get more drone. It also happens when MAP is
increasing as in a slow acceleration or going up an incline. When decelerating or steady pedal the motor is very quiet. The NPP valves are very good but the issue has been that they vary the opening w vacuum. That's why mike100 and myself have been playing w ways if keeping the valves closed regardless of variation in the vacuum signal.

[Paul Workman]

Originally Posted by XfireZ51

Jeff,

We'll have to see if the drone is mitigated by the NPP controls. Don't forget in Pete's and my car, you have cams in the mix too. My system is the same as Bob's except for the design of his X-pipe which could make a difference I suppose.
Now if I could just find a damn seat so I could drive my car.

You can borrow mine, Dom. I have the 90 sport seats just collecting dust! Lemmeno!

[scottfab]

Originally Posted by -=Jeff=-

Everyone's ears are different, everyone has their own tastes. I have heard a car with headers no cats, and Corsa and I tend to agree that it is not my favorite sound for exhaust. My favorite exhaust sound is on Bob G's car..period..

I have not heard another like his ever.. BUT I don't know how the drone would be to me inside the car. Drone and loudness are subjective. Unfortunately it seems there is a history in my family with tinnitus, so my ears are sensitive to some different levels of noise, it sucks.. so I have Corsa WITH Cats and headers. In the car I am comfortable and it does not bother me. I honestly think the cats help make the Corsa sound a bit better outside the car, but still not low and throaty. I love low and throaty but HATE the booming drone our cars produce, my ears cannot handle that

I have heard Pete's and Dominic's cars, both sound Awesome, but I cannot take the drone for very long (yes guys, I hear the drone with the flappers closed too) While the drone it cut in 1/2 or maybe more than half, it still bothers my ears. With the sensitivity of my ears I have to get something that is comfortable to me.

Growing old sucks.. glad I have decided to slow down the growing up part

How about the db level in theaters nowadays? I have to cover me ears on the previews. I'm afraid they'll start bleeding. In between the previews when it to total silence I like to say out load "they need to turn it up a bit".

I do absolutely agree, it is very much subjective. I don't drive my car so much for others to hear outside. I drive it for the seat-of-the-pants feels. I had enough drone(resonance) in the 70s to last a lifetime.

[USAZR1]

I haven't installed my Fusions yet but am wondering how they are going to work with the stock exhaust system.

[We Gone]

I just removed the stock set-up from the new to me 93, after driving it 600 miles home and not hearing anything but quite! I put the Flowmaster catback I took off my 91 on it this week and love the sound. not very loud no drone just sounds like a Corvette.

[LantanaTX]

Hey guys, As mentioned above, I will be a new owner next Saturday when I pick up my '91 with the B&B cat back on it. My last car was a 2004 Chrysler Crossfire that I put a Mercedes V8 into. In the Crossfire world we had problems with drone. After some experimenting, I ended up with an awesome sound and no drone. I used an Ansa single in dual out muffler. it wasn't overly loud but got everyone's attention because it sounded so good. It actually sounded like a sporty Ferrari which made sense since Ansa is made in Italy and they were an OEM supplier to Ferrari. Just thought I would share this in case no one has thought of Ansa. I used my own custom tips welded to the muffler.

[XfireZ51]

Originally Posted by Paul Workman

You can borrow mine, Dom. I have the 90 sport seats just collecting dust! Lemmeno!

Paul,

That would be great. If I had known you could have brought them up last week. Let me know if I can come get them or if you want to bring them up.

[Paul Workman]

Originally Posted by Gunny

Yes, and it's not a very pleasant sound. Been there, done that. Wife didn't like the sound and I finally grew to dislike the "loud".

Current setup is headers, no cats, and 96 LT4 exhaust. I'm considering adding cats and swapping the resonator for an x-pipe but until I hear that setup I'm unwilling to make the change ... I don't want it any louder than it currently is.

Wives are not all alike, THANK GOD!! My Ami asked for side pipes for her 69 chrome bumper Vert to "Make it more rumbley." With the top down & cruising - it is loud. Step on it and you can shout and the person beside you wouldn't even know you made a sound!

But, back to the SW X pipe, I believe they offer (or did for a while) an X pipe with a "cheese grater" liner, intended to quiet drone a bit in lieu of the resonator the X pipe replaces. I wonder if anyone here has tried that version, and if so, what their thoughts might be?

Power Sticks makes a (3") stainless steel bullet type muffler, again with the "cheese grater" lining.

Initially, I intended to replace the (nasty) stock 90 resonator with them, but I sold them unused to Lee, after hearing Pete and Bob G's cars with the NPP and hearing the really nice "big V8 rumble" (and noting their track times at the strip(s) too!). But, I remain curious about the sound they would have made.

[msorenso]

Well I put on the bullet race muffs along with the sainless steel ultra flows and had no sucess in getting it any quieter.....