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Old 04-25-2009, 07:31 PM
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Default 4" bullet?

Is anyone running a 4" bullet right off the y? If so how does it sound and how loud is it?


Right now I have the mufflex y and the mufflex 4" exhaust into a hooker aero chamber. It is not loud at all. Looking for something a little lighter and louder.

The mufflex complete set up is 67lbs
Old 04-25-2009, 10:01 PM
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I'm running a 3" DP merged up to a 4" pipe at the firewall, 4" bullet in the stock cat location with 4" pipe back to the rear seat with it exiting turned down/out there. It's not unbearable, but the turbo helps a lot. I had the same setup on my last car that was N/A with a big cam and it was pretty dang loud. The problem you're gonna have is how droney the 4" pipe is, it will seem louder because its deeper and resonates more inside the car because of this.
Old 04-26-2009, 09:33 PM
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i have 2 3 1/2" dynomax bullets on my car and it sounds awsome and loud very deep sound.
i have a 406 with a 700"lift cam and close to 15 to 1 compression.it was a night and day difference switching from flowmasters.
Old 04-27-2009, 12:04 AM
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I had a LM1 welded off a stock 'Y' for a friend and a 2' section of 3" back from that. Stops right at the axle. Sounds similar to my SLP LM2 out the back when he's getting on it but surprisingly a tad tame normal idle/low throttle.
Old 04-27-2009, 09:56 AM
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Mine might sound a little different because it is an LT1, but here are some vids of when I had headers/ORY/Dumped Bullet off the Y...

Sorry nothing up close, but you can still make out the sound, and as for being in the car, yes it was loud, but not too bad. My wife liked the sound of that combo better that the cutout system I was using prior, this has a more deep and rich tone...







Old 04-27-2009, 09:24 PM
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So do you guys think it would be too loud, that the cops would be all over me?
Old 04-27-2009, 10:04 PM
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I had that same setup GetaV8, it's going to be LOUD.

You could try a spiral flow muffler. I'm running a pair off the collector on the headers and it's surprisingly quiet. Granted I'm an SI car.

BTW, your clean ride is an inspiration!
Old 04-27-2009, 10:11 PM
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Originally Posted by SScam68
I had that same setup GetaV8, it's going to be LOUD.

You could try a spiral flow muffler. I'm running a pair off the collector on the headers and it's surprisingly quiet. Granted I'm an SI car.

BTW, your clean ride is an inspiration!
Thanks on the compliment.

Do you have turndowns after the spiral flows?

And whats a SI car.
Old 04-27-2009, 10:30 PM
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Single 4" bullet is insanely loud, been there. I use a 3" Y-pipe into a flowmaster merge to a 4" magnaflow muffler and it isnt bad at idle/cruise. WOT is pretty loud though but nowhere near the bullet.
Attached Thumbnails 4" bullet?-115.jpg  
Old 04-27-2009, 10:31 PM
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SI = Stock Internal (bolt-on car)
Old 04-27-2009, 11:10 PM
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Thanks Bain

Yes, I have turn downs so the exhaust flows outward and not under the car. Helps with the smell.



I would have kept the same setup with a quieter muffler if I could have. The torque arm cross member prevents that though.
Old 04-28-2009, 08:41 PM
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Originally Posted by SScam68
Thanks Bain

Yes, I have turn downs so the exhaust flows outward and not under the car. Helps with the smell.



I would have kept the same setup with a quieter muffler if I could have. The torque arm cross member prevents that though.

On the drivers side we tried to fit a bullet and it would basically be an inch or two off the ground. This is what I originally wanted to do. But it will be too low.
Old 04-28-2009, 08:43 PM
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Originally Posted by kp
Single 4" bullet is insanely loud, been there. I use a 3" Y-pipe into a flowmaster merge to a 4" magnaflow muffler and it isnt bad at idle/cruise. WOT is pretty loud though but nowhere near the bullet.

How close would you say it was to open header? I don't mind loud it is a play toy car not a daily driver, I am just worried about tooo extreme where the cops are hasseling me.
Old 04-28-2009, 08:56 PM
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Originally Posted by Getav8
How close would you say it was to open header? I don't mind loud it is a play toy car not a daily driver, I am just worried about tooo extreme where the cops are hasseling me.
Its too loud to street drive IMO, I dont think it was any quieter than an open pipe to be honest. here is a pic of when I had a 4" bullet on my old car, you can see there isnt much to make it quiet compared to the magnaflow muffler.
Attached Thumbnails 4" bullet?-ex5.jpg  
Old 04-29-2009, 04:07 PM
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My junk just had an open Y pipe. Never been hasseled by cops in the city I live in. (Knock on wood)



This year I am switching to a 3" bullet off each collector. I don't know how it sounds though, havn't fired it up yet.
Old 04-29-2009, 08:38 PM
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I have the mufflex 3" y into the 4" with 2 4" bullets in a row and a turn down before the axle. It's still too loud for the street. This is on my 98 Camaro.
Old 05-03-2009, 11:03 PM
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i ran mine open y pipe for a bit after i dropped my muffler on the dyno.
good god!
its insane loud.
not open header loud, but on a 11.5 408, it will get you noticed by everyone!
Old 05-11-2009, 04:02 PM
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I have a sound clip of exactly what your doing. slwbrd look it up on youtube.
Old 05-12-2009, 08:54 AM
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Originally Posted by w3s1c0a5t
I have a sound clip of exactly what your doing. slwbrd look it up on youtube.
Looked it up. Got nothing. Link?




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