Modifying stock Y pipe worth it?
Thread Starter
Teching In
Joined: Dec 2011
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Modifying stock Y pipe worth it? I have come to a situation here, when i bought my 02 z28 all it had was a magnaflow muffler, thats it (no idea which one,) car sounds decent when punching it but just not loud enough. My budget (aka the wife) is making this difficult so im trying to look at some budget ideas here. Ive been looking around at some cat back systems, from the shops ive been to around here say that most cat backs wont make my car much louder than it already is but will just change the tone and im happy with the tone. I really want longtube headers but with that price its just not going to happen. Cant do a cut out because they are illegal and my wife doesnt want to deal with that. So yea...
At one performance shop the guy there told me he modded a friend's stock Y pipe to give him some more noise. He said he could get it done from around $150-$250 which is fine. I know it would screw me over for longtubes later since i would have to ditch it, but i dont have any big plans for this thing.
I also saw the SLP loudmouth and loudmouth 2 cat backs, those are semi cheap and am considering those but what have you heard about them? Do they sound any good? Are they tinny at all? thanks guys.
At one performance shop the guy there told me he modded a friend's stock Y pipe to give him some more noise. He said he could get it done from around $150-$250 which is fine. I know it would screw me over for longtubes later since i would have to ditch it, but i dont have any big plans for this thing.
I also saw the SLP loudmouth and loudmouth 2 cat backs, those are semi cheap and am considering those but what have you heard about them? Do they sound any good? Are they tinny at all? thanks guys.
On The Tree
Joined: Apr 2011
Posts: 131
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From: San Antonio, Tx
If by "modify" he means "punch out the cores of the catalytic converters", then indeed that will change the exhaust note quite a bit. But that might give you trouble being legal as well (visually no one would know, but if you have to submit to a tailpipe emissions test you'd be out of luck. Also, without being tuned out, your check engine light would come on.)
Thread Starter
Teching In
Joined: Dec 2011
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Don't pay that much to have somone "modify" your stock Y pipe, get a Loudmouth or Loudmouth 2 catback, that alone will change your tone and reduce your weight as it gets rid of that oversized muffler. And if you want to go go the full step like i am, go with eaither a custom Y pipe or SLP y pipe for the same price shipped as this guy doing what somone else suggested he's going to do...punch out your cats...
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Verdad Gallardo Now, you may get away with just having cats in place for a visual, but that doesn't make it legal.
Ebay headers are 200, TSP ORY is 150, install yourself for free (also rewire the rear o2's to be used as fronts, again for free), plus a few bucks for good header bolts and gaskets. You'll need a tune to really take advantage of the LT's and not run pig *** rich, but you can get that from Frost for what, another 150? Either way, you're still only a hundo or two at the most above what a good exhaust system will cost. Just the Ebay LT's and TSP ORY will run the same as what a good exhaust will go for. Plus you get the performance gains.
