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Thread: Dual Exhausts...fabrication?

  1. #11
    FLAC john1701's Avatar
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    just go get a exhaust tip and mount that to the other side. Come on, its a ricer. Dual exhaust on a ricer....instead of 100hp, what now 101hp.
    Ricer rule #1 Vinyl adds horsepower!

    Now if you install a nice v8 into that ride, you will have a reason to have dual exhaust.
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  2. #12
    Constant Bitrate
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    Just so you guys are all aware... inline motors have dual exhausts...

    my BMW 525i (inline 6) has two header collectors each flowing 3 cylinders. Stock was dual 1.75" pipes but I had a B&B Triflow cat-back from an M5 mated to my headers, with magnaflow hi flow cats welded in. new configuration is 2.5" dual pipes to accomodate for extra flow of my supercharger.





    That x-pipe area is just a collector for my O2 sensor... the system, as you can see, is true dual exhaust.

  3. #13
    FLAC sdashiki's Avatar
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    <---- 4 cylinder corrolla engine 2003 (not celica GTS engine)

    So to get a performance boost I gotta go from the output of the engine exhaust to TWO cats and mufflers?

    The increase in airflow from behind the cat by the way I described, wont add performance?

    rice = Civics not my car....you can call any Jap car a ricer, but gimme a break my Matrix aint about being a friggen little rich kid with $10k under the hood.
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  4. #14
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    Quote Originally Posted by sdashiki
    <---- 4 cylinder corrolla engine 2003 (not celica GTS engine)

    So to get a performance boost I gotta go from the output of the engine exhaust to TWO cats and mufflers?

    The increase in airflow from behind the cat by the way I described, wont add performance?

    rice = Civics not my car....you can call any Jap car a ricer, but gimme a break my Matrix aint about being a friggen little rich kid with $10k under the hood.
    ricer = you. for having the idea of getting dual exhaust on your matrix.

    lets put it this way, having dual exhaust on your 100hp motor won't get you any performance gain, if any it'll be minimal. most likely, like others said, it'll create an obnoxiously loud fart, and decreased torque in lower rpms.


  5. #15
    FLAC sdashiki's Avatar
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    Its a 130HP motor.

    So do some research and stfu, yer 7 posts in and already being a dick. Nice one.

    Answer the ****en question, or offer something pertinent, dont ***** with nothing to say.

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  6. #16
    FLAC evandude's Avatar
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    Quote Originally Posted by sdashiki
    Its a 130HP motor.
    you should give up trying to rationalize it as a big performance upgrade, because it won't be. if the stock exhaust system was just SO BAD that by putting in a cat-back you could gain any serious horsepower, then the manufacturer would probably have just spent the extra $3 on metal and used bigger piping. but unless you have one of those little 1-inch exhaust pipes like you see on some of the budget hondas, then chances are your exhaust is more than capable of dealing with the exhaust of a 130HP engine. I'm not saying a cat-back is a worthless upgrade, but it's more useful when the car actually needs it, and a car that's totally stock really doesn't. Maybe after a chip and some cams.

    If you want to do it for looks, go for it, it's your decision, and if you think it's worth it for that reason, then that's great. People may call you a ricer and you can just tell them to STFU and go your merry way... who cares what other people think. But you're fooling yourself if you think your money is going to performance, and not looks and sound.

    My situation isn't entirely different, my car is about 115hp crank / 95WHP stock, and is now supercharged and running about 40-50% more HP and I'm still waiting to buy a better exhaust until after I have more engine work, and thus a bigger need for it.
    But don't take it from me! here's a quote from a real, live newbie:
    Quote Originally Posted by Viscouse
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  7. #17
    FLAC sdashiki's Avatar
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    You have told me what I wanted to know.

    Thanks.
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  8. #18
    Constant Bitrate Maukio's Avatar
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    I generally agree with evandude. The basic i/h/e bolt ons won't make much of a difference on most cars, especially when you compare the costower ratio. You might gain 3-5 HP and a bit of torque from getting i/h/e but you also probably spent freakin $800. That's ridiculous. If you want to get dual exhuast for looks, go for it. I think dual exhaust looks great on almost any car. The object of the game though is to make it look as clean and stock as you can. I can't emphasize that enough, that's what differentiates tuners from ricers. Don't have some huge blingin fartcan dragging 1" off the ground on each side and wobbling around whenever you hit a bump b/c of how poorly they're mounted. If I was you and I really wanted dual exhaust this is what I'd do. I'd go get another factory muffler, take it and my car to a good exhaust shop. Have em cut your exhaust and weld in a Y pipe, then have them weld your new OEM muffler to the Y pipe. They can then weld on some hangers, brackets, and all that other good stuff to mount it all. Once you're finished it will look very nice. Here is an example:

    http://memimage.cardomain.net/member...54_52_full.jpg

    99% of people wouldn't even realize that wasn't stock. I know the guy who did it and he did it purely for aesthetics. He just liked the look better, he said he felt no gains or losses from doing it, it wasn't for power. Anyway, it's up to you, but if you want to, why not. Spending money on cars is fun.
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  9. #19
    Maximum Bitrate jzgt's Avatar
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    Bigger is not always better - Certain things help exhaust flow. Heat, for example... Not enough back pressure could actually hurt power, the same way too much does.

    That being said, if it's just for looks, just swap out the muffler or, if you have any experience welding, fabricate a setup from the muffler to the tail pipe section. You don't want to start after the cat as it may be difficult to run an additional pipe where only one was engineered to go. If you do alter from the cat back, you'd want a crossover, like Urinemachine's car has. That maybe where they mounted the 02 sensor, but it also serves a purpose from a resonence perspective. You'd get a drone without the crossover, and the x design is more efficient than certain other designs (i.e. my Mustang's h-pipe with a direct right angle crossover. It also balances the flow. I'm not sure what power you'd gain, if any by altering the exhaust, either from behind the cat or just after the muffler. You'd only be able to really answer that question by running a baseline on a dyno and then doing the mod and re-dynoing the car. But if it's cosmetic (and I understand what you mean about the dual cutouts in the bumper covers) then you'll get just what you want.

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  10. #20
    FLAC sdashiki's Avatar
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    Wow two nice people in a row, after a couple of downers. Its like I just got off the smack and got into the crack!

    Anyway,

    "I'd go get another factory muffler, take it and my car to a good exhaust shop. Have em cut your exhaust and weld in a Y pipe, then have them weld your new OEM muffler to the Y pipe. They can then weld on some hangers, brackets, and all that other good stuff to mount it all. Once you're finished it will look very nice. Here is an example:

    http://memimage.cardomain.net/membe...854_52_full.jpg"

    Exactly what I was thinking. But as mentioned, the back pressure, is there a way to feel that when its not high enough or w/e the problems from this setup could be?

    I am not planning on getting any body kit, i think the factory one for the matrix only has a good looking front, the sides and back are nasty.
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