stock pipe size ?

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t0e
Posts: 282
Joined: Fri Apr 11, 2008 10:23 am
Car: 2008 Nissan 2.5SL Altima Sedan

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as the title says just wondering what is the stock pipe size? thanks.


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JDRosenberg07
Posts: 648
Joined: Tue Aug 05, 2008 8:24 am
Car: 08 Altima Coupe 2.5 6MT
Location: Clermont, FL

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Ok i just went and measured my stock exhaust. its a 2 1/4" ish pipe but a little more than half way done the pipe its pinched to 1 1/2" ish.


t0e
Posts: 282
Joined: Fri Apr 11, 2008 10:23 am
Car: 2008 Nissan 2.5SL Altima Sedan

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hm. so will it be possible to do a custom cat-back with 2.25" inlet mufflers ?

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ESP
Posts: 1508
Joined: Thu Apr 24, 2008 6:23 pm
Car: 2008 SexyBlack A/C
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Um...yes?

If the system is 2.25" and the inlet is 2.25"...............................

Hell, the inlet could be bigger and it would still fit (you'd just need to get a step-up adapter pipe to make it fit)

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JDRosenberg07
Posts: 648
Joined: Tue Aug 05, 2008 8:24 am
Car: 08 Altima Coupe 2.5 6MT
Location: Clermont, FL

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Yeah you can pretty much put any size pipe on it and it would still fit. If you take it to a shop they should recomend what to put on there.

anomalyjustin
Posts: 13
Joined: Mon Nov 10, 2008 11:26 am
Car: 1995 Nissan Altima GXE 2.4L

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An exhaust system is really only as efficient as the smallest pipe in the system, however. You can gain very modest power increases by playing with different exhaust set-ups on a whim, but don't forget to take backpressure into consideration. While you can physically get step up and step down adapters to make this system fit that and so on, the exhaust gasses will still bottleneck when stepping-down into a smaller pipe (increasing backpressure) and conversely when jumping to a much larger pipe via a step- up the backpressure will decrease, both of which are terrible for an engine from a performance standpoint.


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