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I bought a muffler with the 2.25" piping and the guy at meineke told me that i lose alot of low-end power with the big piping, he sed its better to leave it at about 1.38" b/c its gotta build up a little bit of back pressure....so whats the truth..i dont think he could be lying...??? or could he be b/c he hates ricers....well someone find out!

 
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No..it kills torque, you will gain a tiny amount of Hp in the high end though

 
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With a cat back exhaust, it is very common to lose low-end torque, but you will gain in the High-end and mid-ranges.

As far as saying that you should stick with 1 3/8 is Bullshit !!

 
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no no no 2.25 is fine that is what htye usually use for custom Cats but i would reccommend 2.5 the limit anyhitng ova that is no good but 2.25 is fine

 
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No 2.25 is not fine (if by fine you mean you wish to retain all ur stock power)...you will lose power. I have a custom cat back w/ 2.25 so I know....don't go over 2.25 on your little 4 cyl. engine or it will be crap.
Also, the larger piping is what makes the exhust sound louder, especially if you remove the resonator. If you stick w/ the stock piping and add a new muffler you really wont notice anything but a new look on ur cars ***.

 
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That guy at Meineke doesn't know what he is talking about. Get 2.25" piping. Nothing bigger than that though or you will lose power. Like everyone said, you will lose some low-end torque, but gain a little hp in the mid-high rpms. If you get a CAI that will help compensate for the loss in low end torque...

 
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blue meanie...actually i face the same situation like u....i ask the meineke too..he gives me the same answer like urs...i just wondering wat is the real hp gain......

so should i just go ahead and put the custom 2.25 piping/???

 
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w/ my cai i noticed a loos in low end torque as well...most aftermarket parts will not gain you any low end hp or ft-lbs...but you will gain in the upper end...

 
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You lost low-end power with the CAI...??? That's kinda crazy ?? Has anyone else noticed that ??

 
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Yeah you do. Installed the AEM CAI on my buddy's 2k1 Ex and drove it around...gain is in high end/mid

 
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loss of low end power for an exhaust.. im definitely not getting one then, i almost always drive in the low end range

 
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i dont see what the big deal is
im not racing int he lower rpm's except for the launch which is about all of three seconds
you can keep the low end
i look for the long run

 
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Maybe I should just sell my Civic and get a Thunder Bird...[IMG]i/expressions/face-icon-small-puke.gif[/IMG]


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yeah, its nothing really too drastic. Its not like your never gonna be able to drive in traffic agian.

 
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Yeh, I agree....I go mostly for top end power anyways.....and if they ever come out with a Super for these cars, I will
get that to balance out the low and high-end. Besides, VTEC doesn't even kick in until after 4000 RPM !!

 
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i got a magnaflow with 2.25 and i didnt lose any low end, if anything i gained a little

 
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<< i got a magnaflow with 2.25 and i didnt lose any low end, if anything i gained a little >>


sure buddy.....

 
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I have a friend that owns a muffler shop. I asked him about it and he said that 2.25 is fine thats what puts on everything. Only time you need to go bigger is if you are running any type of forced induction. (turbo,nitrous,sugercharger)

 
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Nitrous isn't forced induction.

 
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You're right, most people don't consider nitrous oxide to be forced induction. Kinda weird since it essentially raises compression just like FI. I guess the term FI only refers to forcing more air/fuel into the combustion chamber through the use of pressure greater than atmospheric.