Test Pipe - am I over complicating this??
05-26-2003, 03:07 PM
#16
Drifting
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Sami951:
<strong>Dan, wouldn't that be rather noisy? And you will want to have it exit somewhere else than straight under the car... even if you're not necessarily throwing flames out of it, it would really suck to have exhaust fumes in the cabin all the time you're on boost
edit: the evil #666 post... muahahahaa</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">race cars are supposedto be loud
a small pipe can direct airflow out the side of the car, look at the pipe coming off on this 911 motor
<a href="http://www.rpmracinginc.com/racing_photos/76_911/engine3.jpg" target="_blank">http://www.rpmracinginc.com/racing_photos/76_911/engine3.jpg</a>
<strong>Dan, wouldn't that be rather noisy? And you will want to have it exit somewhere else than straight under the car... even if you're not necessarily throwing flames out of it, it would really suck to have exhaust fumes in the cabin all the time you're on boost
edit: the evil #666 post... muahahahaa</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">race cars are supposedto be loud
a small pipe can direct airflow out the side of the car, look at the pipe coming off on this 911 motor
<a href="http://www.rpmracinginc.com/racing_photos/76_911/engine3.jpg" target="_blank">http://www.rpmracinginc.com/racing_photos/76_911/engine3.jpg</a>
05-26-2003, 04:37 PM
#17
Racer
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by shortyboy:
just goto a hardware store,buy a 3" pipe and go and weld it for $20.</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Well, it cost me $40 for a 2' piece of stainless and a case of beer for my buddy to have the pipe 'expanded' at both ends and then welded in. I don't think in my case that there are any burs or other restricting forces at work. If you look at the way the stock exhaust is made, there is no way the removing the cat could possibly add resitriction or cause more turbulent exhaust gasses, even if you really did a really ****ty job.
The end result for me was a car that does feel more peppy, sounds better (stock exhaust was too quiet in my opinion), and gets better gas mileage. There's a catch though - if you ever have to pass emissions, you'd better have a bolt on backup (ie a cat). I'm sure sooner or later I'll be posting here asking if anyone has a spare cat for sale
<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />
just goto a hardware store,buy a 3" pipe and go and weld it for $20.</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Well, it cost me $40 for a 2' piece of stainless and a case of beer for my buddy to have the pipe 'expanded' at both ends and then welded in. I don't think in my case that there are any burs or other restricting forces at work. If you look at the way the stock exhaust is made, there is no way the removing the cat could possibly add resitriction or cause more turbulent exhaust gasses, even if you really did a really ****ty job.
The end result for me was a car that does feel more peppy, sounds better (stock exhaust was too quiet in my opinion), and gets better gas mileage. There's a catch though - if you ever have to pass emissions, you'd better have a bolt on backup (ie a cat). I'm sure sooner or later I'll be posting here asking if anyone has a spare cat for sale
<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />
05-26-2003, 04:45 PM
#18
Burning Brakes
i did the same to my car and it only cost me 8 bucks. i have similar outcome like guards.
as far as the spare i just ordered a used one with considerably less mileage on it as a back up for emissions. i did this last year and it passed.
good luck.
as far as the spare i just ordered a used one with considerably less mileage on it as a back up for emissions. i did this last year and it passed.
good luck.
05-26-2003, 10:15 PM
#21
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Even if you wanted to go back to a cat setup you could have another cat welded back in...a $50 piece of pipe/weld job should give you a decent boost of performace, but nothing like a 3" replacement piece would....on a turbo the bigger is better almost every time.
Quite a few performance diehards do dump the wastegate to the atmosphere and some have a valve setup much like 1940's/50's 'lake pipes' that switched to the side pipes right off the headers when at the track and back to the rear mounted mufflers when returning home.
Quite a few performance diehards do dump the wastegate to the atmosphere and some have a valve setup much like 1940's/50's 'lake pipes' that switched to the side pipes right off the headers when at the track and back to the rear mounted mufflers when returning home.
