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Discussion Starter #1
Hello, just purchased an LTZ with the 4 cyl. 6 spd auto and want to put dual exhausts on it. It looks like the lower valence can be replaced easily with the V6 one with the dual outlets. My question - will the 6 cylinder muffler work with the 4 cylinder exhausts? I have looked under mine and not that the long muffler is in the same place as the 6 one, though I did not look at the dual outlets. Is it a single entry, dual pipe exit muffler? I am betting its almost a bolt on to the 4's and would replace it and then have duals out the rear, would be a nice balanced look. New here, help appreciated! Went with the 4 due to gas prices and wanting better mpg. Happy so far, got an 07 Z06 when I feel the need for speed!

Thanks, Bob
 

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A good muffler shop could easily put a "Y" pipe and split the exhaust after the first muffler which would eliminate the second single in dual out muffler as the v6's, all you would need would be the dual pipe valance from the dealer ;)
 

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Discussion Starter #5
A good muffler shop could easily put a "Y" pipe and split the exhaust after the first muffler which would eliminate the second single in dual out muffler as the v6's, all you would need would be the dual pipe valance from the dealer ;)
Not sure I get it, I want it to be efficient and clean looking. You are saying take the single pipe exiting the muffler on it now and Y it to go to duals? Got to look under there and see how tight it is. Thanks.
 

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Discussion Starter #6 (Edited)
If you got a Z06 just live with the single exhaust on the LTZ... Only kidding, good luck.
What do you mean, "if"? Just kidding, its out in the garage now, up on a lift, though when I am in the LTZ no one knows about the Beast at home. Just like the balanced look of duals on the car instead of living with that one chrome exhaust pipe. Want it to look factory done. Wish they had of!

Got to drive the Malibu with more than 2 of us going anywhere.
 

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Just like the balanced look of duals on the car instead of living with that one chrome exhaust pipe.
I agree, I like dual tailpipes better. Makes the car look much more powerful...:D

But I know people who hate them. A friend of mine at school has a Toyota Avalon, and she hates her dual tailpipes.
 

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Discussion Starter #13
I checked into doing a factory mod. today at my dealership. Seems the muffler is in the same location, same single pipe entry, though it has an exhaust pipe exiting on either side of the muffler and out thru the valence to each side. The factory muffler is welded onto the pipe and is not sold separately - its all one piece from the front and has a resonator or another muffler in the single pipe. It appears that the 4 has a cat at the beginning where the V6 system does not. I don't know if the V6 pipe is any bigger, it does not appear to be. Pricing with good deal from the parts dept puts the mod at about $415 including the new dual outlet valence at the rear. It appears that the pipe will have to be cut and then rewelded or clamped into the 4 cyl. pipe at the easiest place. I am thinking of ordering this and then take my exhaust completely off and take both to a muffler shop to come up with the best solution. I have a lift, so will do all the labor of removing and installing myself, only farming out the welding or the connector being made. Should end up under $450 for the entire job. I think it will be worth it to have a factory system. I am not going to drop off the cat nor the other inline muffler, so nothing should adversely affect the running or emissions. Maybe just a tad more efficient with the dual exit from the muffler? Anyway, it sure will look nice. Going to put on the lift tomorrow and look under mine good before ordering the V6. Any opinions or questions?

Thanks for the help on here.

Bob:)
 

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Discussion Starter #15
OEM works for me :cool:
When you have it on the lift take some before and after pics ;)
The Before will be looking to make sure there are no big problems. The After will come several weeks later after I receive the new exhausts from a V6. I think its going to be a done deal, they just look so much better with duals! Yours has the duals, right? Hey, you want to donate them to me?!:)
 

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Discussion Starter #17
Bit the bullet, went by my dealer this morning and looked under a V6 and a 4. I think the exhaust will be a direct replacement so I ordered the V6 exhaust from the cat back and also the rear dual valence below the bumper. The parts man thinks it will be in Tuesday of next week. That means, if it looks like a direct replacement, will install next weekend. Will take photos of the install. Anyone interested in knowing what it entails after I am done, feel free to drop me a line. Its going to look lots better, I know that. Also ordere k&n drop in air filter, vent shields for the windows, and thinking about painting my brake calipers a dark red. Just getting the car like I want it, a little different and unique. Will report back when the exhausts are on.
 

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Discussion Starter #18
Found out today that the exhausts are on back order. Hopefully not for long, but who knows. Guess they need all they are making to make the cars with the duals.
 

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Found out today that the exhausts are on back order. Hopefully not for long, but who knows. Guess they need all they are making to make the cars with the duals.
Can't wait to see photos! If it turns out to be just as clean as the LTZ exhaust, i'm jumping on that and putting them on my LS. Good Luck!
 
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