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Tell me what ya think.. i went to a speed shop and they had a 2-1 header for 4cly's.. of course ya need two... but its true duals for a 4banger. Would i lose power with two pipes?

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I would think that you would gain power cuz with 2 pipes there would be twice as much exaust that can be let out in the same amount of time as one pipe.....ummmm, did any of that make any sense?
 

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Unless you were running boost, you would lose alot of back pressure. It's definitly a power killer on the Tibs by doing that..so I'm willing to bet the same thing will occur with an Accent, since there's less power with them. <img src=icon_smile_blush.gif border=0 align=middle>
 

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You would lose a lot of power. A four cylinder engine needs a certain amount of back pressure from the exhaust in order to put out its optimum power.

I wouldn't recommend it <img src=icon_smile_big.gif border=0 align=middle>.

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Also consider that true duals weigh more than just a single high flow system. Two pipes, mufflers, and twice the hangers required.

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Well then....I stand corrected.
I guess its true what they say...you lear something new everyday <img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_wink.gif border=0 align=middle>
 

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you'd lose all that low end power that you love if you ran true duals. Not a good idea!!!<img src=icon_smile_wink.gif border=0 align=middle>

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not only is it not a good idea but its GHETTO. <img src=icon_smile_evil.gif border=0 align=middle>

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If you were to combine the two 2-1 pipes, then you would basically have a really long 4-2-1 exhaust. if you plan on running 2 completely seperate exhaust pipes. drop the diameter down to 1.5" That is still the equavilant of a 3" exhaust for all 4 cylinders. You would lose a hell of a lot of low down torque, but gain on the top end. You would also need 2 cats, one per side, plus 4 o2 sensors, and something to read the 4 o2 sensor signals and make sense of the readings for the ECU.... You would also add a heck of a lot of weight for what would basically equal a wash performance wise...

Leave it to Random to Needlessly complicate things.
 

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<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
I get the point its a bad idea.. but how is that getto if it is true duals?[/quote]</font id=quote><font face="Verdana, Arial, Helvetica" size=1 id=quote>

It's Ghetto if there is no increase in performance. Plus all the CRAP you'd have to go through to get it to work right.

Hell I think 99% of dual exhausts on V6's are ghetto becuase they are a single pipe up to the rear axle...then the split into duals. They could have saved weight and cost by just keeping it 1 pipe and having 1 muffler...

Leave it to Random to Needlessly complicate things.
 

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In stock form most 130-160hp 4 cyl engines have 5-6lbs of back pressure which is power robbing. Just adding a more free flowing cat and catback can drop the back pressure to 1-2 lbs which is optimum.
 

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The newest issue of Sports Compact Car has a great article on DIY exhaust systems. Some good info for all of us.

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yep that's the one. The article disscuss all our favorite topic such as back pressure and velocity of exhaust. Also how not to ennd up on RICEBOY.com.<img src=icon_smile_cool.gif border=0 align=middle>

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