exhaust cut-out

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Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

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my brother briefly told me about this before (he was thinking about it for his C5 corvette a while back) and i saw it on "Unique whips" one time when they were turning one of Jeff Gorgen's race cars into a convertable street car. so it's basicly a thing that goes in the pipe to where you're driving on stock exhaust and then the second you hit the button, it closes that pipe and opens another pipe that has no cats or muffler (pretty much straight piped). or at least that's what i understand. what are your guys/girls views on this? i know i'd have a lot less torque since no back pressure but how much more hp would i get (since i can go stock or race with the flick of a switch). would this negatively affect the engine in any way? does anyone know how much it would cost?



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cuzzbubba420
Posts: 425
Joined: Tue Dec 18, 2007 5:15 am
Car: 08 Altima 2.5 S w/ CVT

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It would probably sound pretty sweet but the torque loss might kill you w/ the back pressure. I seen a video on youtube of a honda accord with straight exhaust pipes coming down by the front tires and it sounded pretty sweet!! (I just want to take a drill and bore out my cat!!! I did it with my integra but then you have to deal with the check engine light for eternity)

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alphapig
Posts: 1972
Joined: Tue Nov 20, 2007 2:52 pm
Car: Nissan Altima Coupe S 2.5
Location: NorCal

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Also, good luck with smog checks!

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Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

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well, don't they usually just stick a thing in your tail pipe and look under the hood? if you hit the switch and go to regular stock exhaust, it should be stock and pass. when you hit the switch it closes the pipe to the stock exhaust and opens a pipe that has no restrictions at all. so daily driving you have stock exhaust that's not hella loud, then at the track you have it sounding like a mean *** race car....

another question i'd have is the tune. wouldn't the air/fuel ratio be off? unless some how you could hook up a little portable tune device (i think my friend has one for his mustang) but if you do have that, could you hook it up to the switch that does the exhaust change (so that it changes the exhaust and tunes itself at the same time) and could the car be in motion when you change the tune? or would you have to park it first?

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Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

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ok so no one has any advise or experience with this? from what i've seen online, it seems like a really good idea to me but i haven't really seen it in person or talked to anyone about it

videotuning
Posts: 5
Joined: Fri Jan 11, 2008 11:56 am

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you are right no one talks about that

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rjdmmfl1
Posts: 5111
Joined: Tue Sep 25, 2007 8:52 pm
Car: 2008 Altima Coupe, Radiant Silver, 3.5SE, Premium Package, VDC

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<snip by mod> Please review the Terms of Service re plugging other car sites.


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