What are the options for good flowing stainless steel mufflers wich actually "mufflers" the sound on low rpm / street driving but will thunder when needed ? Any body have big borlas ??
Magnaflows, Borlas, or Ultraflo's in the largest sized case you can fit.
I run big-cased Magnaflows on my car and they're tame at light load acceleration and rather quiet at cruise... but they're loud at wide open throttle.
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1969 Chevelle
Old setup: Procharged/intercooled/EFI 353 SBC, TKO, ATS/SPC/Global West suspension, C6 brakes & hydroboost.
In progress: LS2, 3.0 Whipple, T56 Magnum, torque arm & watts link, Wilwood Aero6/4 brakes, Mk60 ABS, Vaporworx, floater 9" rear, etc.
If you are not in a hurry meaning you can wait a few weeks we are coming out with a new option for all you guys.
We have teamed up with B&B Exhaust and they make a new system with a control valve called Fusion Bi-Modal Exhaust System that will work on any car and once you see what it does I think you will be amazed. Its a great exhaust system that you will love and your wife or girlfriend will love more.
What is bi-modal exhaust?
The Fusion is a bi-modal exhaust system, meaning it has two passages, or modes, that the exhaust can travel through the muffler. Each of the mufflers has two outlets, with one side having a butterfly type valve which allows the exhaust flow to be shut off, regulating which side of the muffler the flows exhaust. One side of the muffler is the “quiet” side, and one side is the “loud” side. The “quiet” side is a smaller, muffled and chambered tube, while the “loud” side is 3” tubing straight through.
How loud is it?
Through our development and customer feedback we have shortend the mufflers, making the “loud” side of the muffler “louder”, In the closed position the tone would be slightly louder than the standard vette system.
What controls the valves?
The butterfly is controlled by a vacuum valve, which we built and developed completely in house. On the Z06 and the 2008 C6 with the NPP option, this valve is controlled by the ECU. The valve opens based on RPM and throttle position. The problem is the factory exhaust is very quiet, even with the valve open. Our expertise here at B&B is getting the “tone” right for your Corvette, and we think we nailed this one. Even in the closed position, the tone is deeper, louder, and more aggressive. Open the valves, the overall volume and tone increases to the point heads will turn when you drive up.
This is what comes on the corvette and we are taking it to the next level in a universal muffler size similar to the magnaflow and flowmaster set up. this will be in our new hot rod kit set up that is going to be available anytime. I will have some pictures of it very soon.
Just another idea for you guys as we always get the "exhaust is to loud" my wife hates it. So this will solve that problem. I will get you updates on sounds as soon as we have them.
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Chris Fesler
Fesler Built - Scottsdale, AZ
If you are not in a hurry meaning you can wait a few weeks we are coming out with a new option for all you guys.
We have teamed up with B&B Exhaust and they make a new system with a control valve called Fusion Bi-Modal Exhaust System that will work on any car and once you see what it does I think you will be amazed. Its a great exhaust system that you will love and your wife or girlfriend will love more.
Chris , how many people you have working in there.Every week you have something new. I sure can wait and i am intrested.
Since you are on high gear could you produce 1gen aftermarket sub friendly long tube headers for LSx
I really like the idea of the Bi-Modal system. I actually looked at the B & B setup to see if i could figure out a way to make it work with my Camaro. I'm definitely interested in this setup and would love to see what you guys have cooking.
Brian Hobaugh SCCA National Tour June 2014
First Hemi 'Cuda Convertible Ever Built
Short clips: Goodguys Pleasanton autocross and pit videos
Hybrid Mode
