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probably a noob question

Discussion in 'General Discussion' started by 99corollarolla, Nov 18, 2008.

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    99corollarolla Member

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    probably a noob question

    i was wondering how much gain in hp would a corolla have if i changed the underpipings connecting to the exhaust to a diameter of 2.5inches?
    99corollarolla, Nov 18, 2008
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    ChicagoCruise Well-Known Member

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    definitely a noob question :D
    ChicagoCruise, Nov 18, 2008
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    turbo4age Love to Hate me

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    in a 99 corolla? youll probably lose power with a 2.5in exhaust.
    turbo4age, Nov 18, 2008
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    MovieSTAR i hurd u liek?

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    you dont lose power with a 2.5' exhaust. anything bigger then that and you would. i can dig up my graphs again -_- they are on TN if you really care to look. to answer your question.

    no more then 5ish...
    MovieSTAR, Nov 19, 2008
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    turbo4age Love to Hate me

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    go get your graphs. a 2.5in exhaust on the 1zzfe wont gain 5hp
    turbo4age, Nov 19, 2008
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    rolla02 Corollalcholic

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    Nate is right.

    I lost power on my 1ZZ with a 2.5 cat -back, gained it back and then a little more with 2.25
    rolla02, Nov 19, 2008
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    nyrican52884 Active Member

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    Not to hijack, but its relative.

    I have a magnaflow muffler that I want to put in and get 2.25" piping, but I want to know whether to keep the resonator or not. And if I should keep the cat or not. I live in FL and there's no emmissions testing, but if a cop pulls me over and decides to look I could get screwed.
    nyrican52884, Nov 19, 2008
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    Ares Active Member

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    Graphs would be great. Did we just have a topic on this not too long ago?
    Ares, Nov 19, 2008
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