Has anyone tried these on their SHO?

https://www.youtube.com/watch?v=7kJwwvYNQVA

They are high flow mufflers with an exhaust pressure activated spring controlled flap that reduces drone at low flow situation like highway cruising. Seems like the perfect answer for my exhaust cause I want the car quiet in neighborhoods and cruising on the highway but sounds like a beast otherwise. There are tons of videos on youtube of them on different applications. Can someone please try for me =-) I really want these I am thinking..!

another good video on it https://www.youtube.com/watch?v=6uIHur81er0

Never heard of them, but I think the Vette's have a similar muffler. 

On a Mustang:
https://www.youtube.com/watch?v=S_g5i4K9G4k

Pretty cool find

Rich

Looks like a failure waiting to happen with that spring.   Save up for the Corsa,  drone free and one less cat.

havent you saved them in the box long enough??? 

While searching on the Dynomax VT, I found other options.

Anyone ever heard of these muffler?

http://waldronexhaust.com/drivercontrolledexhaust.htm

http://www.ebay.com/itm/65MM-UNIVERSAL-XFORCE-OVAL-REMOTE-CONTROL-VALVE-EXHAUST-MUFFLER-SYSTEM-3-0-TIP-/171739444247?hash=item27fc77f417&vxp=mtr

Here's my feedback on this. I had rasp from hell when I put on Stainless Works catless downpipes with the Corsa cat back. These cars are notorious for rasp due to how long the exhaust pipes are.  https://www.youtube.com/watch?v=128SB_RY0UQ

The factory exhaust has 2 cats, 1 x pipe, and 1 H style rear muffler/cat before the rear mufflers. If you go through the trouble of just replacing the mufflers, you're gonna be pretty disappointed. Anything after the cats + x pipe, + rear cat won't change the tone too much. I do, however, enjoy the muffler delete sound, but I feel at high way it can be a little noisy. https://www.youtube.com/watch?v=w8v5Sw_lTX8

If you decide to do what i did with the catless downpipes and corsa cat back, I strongly recommend getting a magnaflo (or alike fiberglass resin) muffler to cut down on the rasp. I know one of the ecoboosters had a lot of luck with my stainless works catless downpipes and MRT axle back.

Quote from: 14SHOCAR on June 19, 2015, 11:56:37 AM
Here's my feedback on this. I had rasp from hell when I put on Stainless Works catless downpipes with the Corsa cat back. These cars are notorious for rasp due to how long the exhaust pipes are.  https://www.youtube.com/watch?v=128SB_RY0UQ

The factory exhaust has 2 cats, 1 x pipe, and 1 H style rear muffler/cat before the rear mufflers. If you go through the trouble of just replacing the mufflers, you're gonna be pretty disappointed. Anything after the cats + x pipe, + rear cat won't change the tone too much. I do, however, enjoy the muffler delete sound, but I feel at high way it can be a little noisy. https://www.youtube.com/watch?v=w8v5Sw_lTX8

If you decide to do what i did with the catless downpipes and corsa cat back, I strongly recommend getting a magnaflo (or alike fiberglass resin) muffler to cut down on the rasp. I know one of the ecoboosters had a lot of luck with my stainless works catless downpipes and MRT axle back.

Thank you for the feedback.

Actually I have a full custom 2.5in turbo-back exhaust waiting for installation in the garage. I am just afraid it will be too loud with a straight through muffler design so I am looking at "plan B" if I doesn't like it.

LMS catted downpipes
custom x-pipe and mid-pipe (3rd cat delete)
unknown muffler offset-center 2.5in straight through
5in tips (too big for my taste)

I should take pictures and get back here.

Quote from: BigPelo on June 23, 2015, 09:10:44 AM
Actually I have a full custom 2.5in turbo-back exhaust waiting for installation in the garage. I am just afraid it will be too loud with a straight through muffler design so I am looking at "plan B" if I doesn't like it.

I'd go straight to using the magnaflow resignating muffler.... You will still have rasp with high flow cats

I tried the 2.5" Vt's on my SHO with PPE Catted down pipes and no 3rd cat or resonator and the car just buzzed under throttle and sounded horrible. I put the stock mufflers back on and I have been happy like that... Hard to describe the hum under load the mufflers made like an forlorn bee or something was not good.

Quote from: TooFast4SHO on June 23, 2015, 12:28:02 PM
I tried the 2.5" Vt's on my SHO with PPE Catted down pipes and no 3rd cat or resonator and the car just buzzed under throttle and sounded horrible. I put the stock mufflers back on and I have been happy like that... Hard to describe the hum under load the mufflers made like an forlorn bee or something was not good.

Wow, very close to the setup I was looking for. Did you kept the VT's? Which part number did you get?

Quote from: 14SHOCAR on June 23, 2015, 11:38:22 AM

Quote from: BigPelo on June 23, 2015, 09:10:44 AM
Actually I have a full custom 2.5in turbo-back exhaust waiting for installation in the garage. I am just afraid it will be too loud with a straight through muffler design so I am looking at "plan B" if I doesn't like it.

I'd go straight to using the magnaflow resignating muffler.... You will still have rasp with high flow cats

I guess you meant resonating muffler?

I got two of the DynoMax 17156 VT Mufflers, It was like a turbo muffler hum/buzz type sound.

Quote from: BigPelo on June 23, 2015, 12:40:49 PM
I guess you meant resonating muffler?

Yup.

I have part two of the exhaust video up now....

http://www.ecoboostperformanceforum.com/index.php/topic,4924.0/topicseen.html

Part 3 will include another member's flex with the downpipes I took off + a different exhaust system.