Guinness133 Posted June 10, 2009 Share Posted June 10, 2009 I have two questions.....one, I've heard of people removing the resonator to give the Legacy a nice little growl. What's the best way to do this, remove the resonator and replace it with straight piping? 2nd...I've been looking for a cold air intake but all I can find are intakes for 06 Legacys....anyone know if that will fit my 08 Legacy? Cheers! Link to comment Share on other sites More sharing options...
nipper Posted June 10, 2009 Share Posted June 10, 2009 Not crazy about your warrenty or passing inspection? Resonators are long gone, you are talking about replacing the muffler. nipper Link to comment Share on other sites More sharing options...
Guinness133 Posted June 10, 2009 Author Share Posted June 10, 2009 Warranty is already up. haha Why would doing those things cause it to not pass inspection? I'm just looking for a 15-20 HP gain...any ideas? Cheers! Link to comment Share on other sites More sharing options...
nipper Posted June 10, 2009 Share Posted June 10, 2009 Depending upon where you live, modifying the exhaust system is against the law. Some places dont care, others use an inspection mirror to check the exhaust system Generally ricers do this to thier hondas. nipper Link to comment Share on other sites More sharing options...
Guinness133 Posted June 10, 2009 Author Share Posted June 10, 2009 So, any suggestions for a quick 20 HP gain? Link to comment Share on other sites More sharing options...
nipper Posted June 10, 2009 Share Posted June 10, 2009 An exhaust tin can wont do it, and anyone who guarentees you a 20 HP gain out of a box is taking your money. Modern cars are fairly peaked out. They breath effeciently, they last many rouble free miles, and get the best mpg they can for all around performance. There are things you can do for a quicker throttle response (which is NOT a HP gain like most sites say). One is lightened pullies. A high flow cat doesnt work unless you are doing cams etc to take advantage of it. You already have a cold air intake (as do almost any modern car). You can clean it up, and if you never intend to take your car into water of any great depth (most engine damage from sucking in water comes from puddles on paved roads) you can get rid of the snorkus and get a free-er breathing system, The intake air filter sits in the right front fender rather low. The subaru sinus is designed to keep the engine from digesting water. not much more beyond that for a normally asperated subaru. nipper Link to comment Share on other sites More sharing options...
Guinness133 Posted June 10, 2009 Author Share Posted June 10, 2009 Hmmm...I'll send you a pic of something...wondering if you could tell me what it is and what it does. Link to comment Share on other sites More sharing options...
Guinness133 Posted June 10, 2009 Author Share Posted June 10, 2009 What is that thing?? Link to comment Share on other sites More sharing options...
nipper Posted June 10, 2009 Share Posted June 10, 2009 Thats part of the snorkus. There are odd cavities like that to tune the sound of the engine to meet federal noise standards. Thinks of it as a sinus cavity. Link to comment Share on other sites More sharing options...
OB99W Posted June 10, 2009 Share Posted June 10, 2009 It seems that Guinness133 is talking about an intake (not exhaust) ''resonator'' (silencer). That part not only reduces noise, but it also minimizes intake air turbulence that can occur at certain engine RPMs. Eliminating it can therefore cause air metering to be inaccurate under some conditions, causing other problems. Link to comment Share on other sites More sharing options...
nipper Posted June 10, 2009 Share Posted June 10, 2009 Ah ok hes talking the snorkus end. Link to comment Share on other sites More sharing options...
Guinness133 Posted June 10, 2009 Author Share Posted June 10, 2009 so, then I'm guessing it's not a good idea to remove that and just put straight piping there? just looking to gain a few extra horses somehow. Thanx guys! Link to comment Share on other sites More sharing options...
OB99W Posted June 11, 2009 Share Posted June 11, 2009 so, then I'm guessing it's not a good idea to remove that and just put straight piping there? I'm sure that there are people who'll tell you they gained 5 WHP or so by replumbing the intake, but it doesn't come without consequences. just looking to gain a few extra horses somehow. Thanx guys! As Nipper already mentioned, the cars are pretty well engineered to get what performance that can be had out of the engine and still have it be reliable, etc. I'm not going to suggest that Subaru (or any other manufacturer's) engineers build perfectly efficient cars. One of the reasons that some companies participate in racing programs and/or research at universities is that they sometimes learn a new trick or two. However, engineers tend to be aware of what aftermarket companies are doing, so if it were cheap and easy to get the 15-20 HP you're seeking, it would have likely been incorporated into the design. Link to comment Share on other sites More sharing options...
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