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stock size on a 2012-2013 is 60mm or 2.37" and i believe stock size for 2014-2015 is 64mm or 2.5"
 

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ROTM February 2014/15
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HAHA I have the Q300 and my lady complains!
My lady used to complain about the smell from being catless but now she's all gravy. She loves the Full-Race sound/tone, I honestly don't know if she'd still date me if she had to put up with Skunk2 Exhaust cruising the highway at 3k RPM. You practically have to yell to have a conversation. Good thing though is if it's your first date and you're worried about a awkward car ride to lunch/dinner y'all wont have a chance to talk in the car so no need to worry! HAHA!
 

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Discussion Starter #7
I've heard the exhaust is loud so I think I'll probably keep the silencer in it to help out. I read that skunk's silencer doesn't restrict it much so I hope it works out. I've also heard a couple videos and it seems low key. How do u guys feel about silencers?


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Why buy a loud exhaust to keep a silencer on it? Why not just buy a quieter exhaust? If I could buy another exhaust I would pick up the Full Race. I will be selling my Q300 at some point down the road to buy the Full Race. I just got a smoking deal on a used Q300 system so I took it.
 

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ROTM February 2014/15
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I think buying a Skunk2 and keeping the Silencer on isn't worth it. You look like you HAD a 3in exhaust and then restricted it to 1in. With it on it isn't as loud but it still is louder than a Q300 for example.
 

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You Don't know Me!
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Why buy a loud exhaust to keep a silencer on it? Why not just buy a quieter exhaust? If I could buy another exhaust I would pick up the Full Race. I will be selling my Q300 at some point down the road to buy the Full Race. I just got a smoking deal on a used Q300 system so I took it.
Why are you changing from Q300 to Full Race?
 

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2015 stock size of B pipe is 2.4 inch, it turns to an oval 2.1 x 2.4, just before the first muffler it is 2.33, over the rear control arm is flat on the bottom 2.25 x 2.1 ish flat. All OD.
 

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Why are you changing from Q300 to Full Race?
Preparing for forced induction. I want a 3" exhaust to get the most I can out of it. I am also getting tired of the infamous Q300 rattle. I have been trying to get it in the shop for another attempt to quiet the rattles.

And the Full Race would match my downpipe :)
 

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Re: OP question, I think it would be interesting to know the weight difference between stock and aftermarket catbacks.
 

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