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Old 09-20-2007, 07:24 AM   #1
cake872
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Lightbulb Racing Exhaust....?

Hey do you think their will be much of a diff between me removing the catilitic converters out of my exhaust pipes and buying a set of aftermarket racing pipes?
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Old 10-05-2007, 03:19 PM   #2
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Originally Posted by cake872
Hey do you think their will be much of a diff between me removing the catilitic converters out of my exhaust pipes and buying a set of aftermarket racing pipes?
Depends on the motor, but should free up some power either way
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Old 10-05-2007, 04:06 PM   #3
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It'll definitely free up some noise.
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Old 10-05-2007, 05:19 PM   #4
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Free up some power, some noise, and maybe some smell. It's not uncommon for cars with the cats removed to smell like rotten eggs. A full exhaust (headers, catback, and whatever you plan on putting inbetween) will cost a lot of money for minimal gains. You may barely be able to feel the increase in power. Add in the pain in the ass it will be to get it inspected plus the guff you'll get from the cops too.
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Old 10-05-2007, 05:33 PM   #5
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Originally Posted by giant016
Free up some power, some noise, and maybe some smell. It's not uncommon for cars with the cats removed to smell like rotten eggs. A full exhaust (headers, catback, and whatever you plan on putting inbetween) will cost a lot of money for minimal gains. You may barely be able to feel the increase in power. Add in the pain in the ass it will be to get it inspected plus the guff you'll get from the cops too.
well hes not in the us...if i remember hes in puerto rico or somewhere else like that so the laws may differ
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Old 10-05-2007, 09:18 PM   #6
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well hes not in the us...if i remember hes in puerto rico or somewhere else like that so the laws may differ
Yeah, but it would still draw attention, and make it seem more likely that he is involved in illegal street racing.
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Old 10-05-2007, 09:44 PM   #7
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Yeah, but it would still draw attention, and make it seem more likely that he is involved in illegal street racing.
so does my side exhaust, and hid kit, and window tint, and lowered suspension...cops never pull me over, and unlike the 300, with my car they would need no effort to stop me even if i was dumb enough to run
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Old 10-05-2007, 11:56 PM   #8
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Whether or not it's legal where he is isn't the whole story. A good setup can run over $1000, and he might gain 20hp. A lot of people do exhaust early in the modding stage because it makes the car more fun to drive, but for performance/dollar there are probably a few better alternatives at this point. This is assuming he means a full race exhaust (headers, midpipe, catback).
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Old 10-06-2007, 08:29 AM   #9
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Originally Posted by newyorker
well hes not in the us...if i remember hes in puerto rico or somewhere else like that so the laws may differ

Maybe for noise, but at least they'll be used to the bad smells.
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Old 10-11-2007, 04:26 AM   #10
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Well I dont have headers but I do have a catback exhaust already. And if I just rip out the converters form my current exhaust that saves a bunch. So it would be that lil trick and jus to purchases the headers. and yes i live in the bahamas and it wouldnt be a prob at all. and no not any street racing as yet
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Old 10-23-2007, 05:10 PM   #11
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Exhaust may have minimal gains, but put engine work into your car with a stock exhaust and then you're f-in yourself. Exhaust is a very important part of the tuning equation. 20hp... That's a pretty good increase btw.

Laughs @ removing cat.
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Old 10-23-2007, 05:37 PM   #12
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Originally Posted by giant016
Free up some power, some noise, and maybe some smell. It's not uncommon for cars with the cats removed to smell like rotten eggs. A full exhaust (headers, catback, and whatever you plan on putting inbetween) will cost a lot of money for minimal gains. You may barely be able to feel the increase in power. Add in the pain in the ass it will be to get it inspected plus the guff you'll get from the cops too.
From previous experiences, cats can smell of rotten eggs themselves, even more so if you have just been driving quite 'hard'. I've always looked at this as being the cats way of telling you that it hasn't got long left.....maybe.
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Old 10-24-2007, 10:30 PM   #13
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Originally Posted by cake872
Well I dont have headers but I do have a catback exhaust already. And if I just rip out the converters form my current exhaust that saves a bunch. So it would be that lil trick and jus to purchases the headers. and yes i live in the bahamas and it wouldnt be a prob at all. and no not any street racing as yet
If you wana save money, take out the cats and grind out the insides..basically hollow them out, will give the same effect as a test pipe, and will cost nothing..dont forget to make a CEL Defouler look up how to make one its very easy. no cats smell like gasoline..i love it
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Old 10-25-2007, 12:38 AM   #14
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Originally Posted by newyorker
If you wana save money, take out the cats and grind out the insides..basically hollow them out, will give the same effect as a test pipe, and will cost nothing..dont forget to make a CEL Defouler look up how to make one its very easy. no cats smell like gasoline..i love it
If you mean just hollow out the cat and put it back on, minus the honeycomb inside, I done this on my 1996 Vauxhall Astra (not for a performance upgrade, but because it was breaking up anyway, and became restricted). And it made no difference at all to performance or even sound. It's also worth noting that the inside of a cat can be bad for your health...Kinda ironic really, lol.
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Old 10-25-2007, 02:17 AM   #15
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If you mean just hollow out the cat and put it back on, minus the honeycomb inside, I done this on my 1996 Vauxhall Astra (not for a performance upgrade, but because it was breaking up anyway, and became restricted). And it made no difference at all to performance or even sound. It's also worth noting that the inside of a cat can be bad for your health...Kinda ironic really, lol.
im talking about gutting the whole thing, including the honeycomb. My buddy did this on his s2000 and gained a noticable gain in power
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