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how much power gain from magnaflow cats

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Old 06-02-2009, 06:48 AM
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how much power gain from magnaflow cats

i have an 02 f150 and am planning on cutting out the 4 original cats and putting on 2 high flow mags. the part number on the cats is 94006. will i lose or gain any power? i have a di/do flowmaster super 40 muffler. i just want to make sure that my mileage will get better and that the power will not decrease. also how will the sound change. thanks
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Old 06-02-2009, 10:22 AM
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I'm no professional when it comes to exhausts but I wouldn't expect anymore than a couple of hp or so. The difference that you will notice is the sound of your exhaust. It will be louder for sure.
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Old 06-02-2009, 11:35 AM
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youl get better power throught the rpm range and wont hurt your mpg's and youl gain alot of sound
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Old 06-02-2009, 12:13 PM
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There will be a gain of a couple pounds of torque ( less than 5 at low end ) and your high end power will be better.
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Old 06-02-2009, 05:52 PM
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**** it's cheaper to take them OFF! haha flame suit on
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Old 06-02-2009, 08:53 PM
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yeah they mainly will give you alot more noise, why i got them haha. but in all honesty, the chances of you actually FEELING a big difference in hp/torque is very slim. haha. most do it for the sound. it was a good upgrade i think, worth the money. made my super44 sound sweet
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Old 06-02-2009, 09:48 PM
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Quote:
Originally Posted by shocker11 View Post
**** it's cheaper to take them OFF! haha flame suit on
But a $1,000 - $10,000 fine getting caught without cats is not cheaper.
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Old 06-02-2009, 10:44 PM
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Doing this mod with your setup will more than likely just make it louder and introduce "crackling" and backfiring with an aggressive fuel pedal.

I wouldn't expect too much power wise, but throttle response should be a tad quicker. I had a similar setup on a 95 and liked the aggressiveness, but the crackling when the engine was cold was a bit annoying. I now prefer smoother deeper tones, But some guys still like that stock car sound.

Just make sure you like LOUD & cranky!
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Old 06-03-2009, 01:46 AM
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power, nahh. not enough to feel. much better sound for sure. throttle response also will be greater.
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