no catback?
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TECH Apprentice
Joined: Jun 2002
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no catback? Anyone tried running no catback?
I'm getting a new exhaust, so my friend and I chopped the stock exhaust right as it came over the rear axle, so its like a turndown. Car feels the same, just louder. Anyone did this? if so, did you gain HP? It definately feels like it lost torque.
thanks!
I'm getting a new exhaust, so my friend and I chopped the stock exhaust right as it came over the rear axle, so its like a turndown. Car feels the same, just louder. Anyone did this? if so, did you gain HP? It definately feels like it lost torque.
thanks!
!Dial-up Director
Joined: Nov 2001
Posts: 3,100
Likes: 1
From: Louisiana
Re: no catback? All the time! Open y-pipe is the only way to go. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> You should see a slight gain over stock, in the range of 5-10rwhp. You have not lost torque, you just hear your engine working harder. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Justin
Justin
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TECH Apprentice
Joined: Jun 2002
Posts: 360
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Re: no catback? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jsears8:
<strong>All the time! Open y-pipe is the only way to go. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> You should see a slight gain over stock, in the range of 5-10rwhp. You have not lost torque, you just hear your engine working harder. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Justin</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">So why do people have catbacks?
Wouldn't the ideal exhaust be something like:
Dynatech Race Headers, going into offroad 3" ypipe, exiting halfway down the car with a 12" dynamax bullet?
<strong>All the time! Open y-pipe is the only way to go. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> You should see a slight gain over stock, in the range of 5-10rwhp. You have not lost torque, you just hear your engine working harder. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Justin</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">So why do people have catbacks?
Wouldn't the ideal exhaust be something like:
Dynatech Race Headers, going into offroad 3" ypipe, exiting halfway down the car with a 12" dynamax bullet?
TECH Resident
Joined: May 2002
Posts: 829
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From: Fremont, CA
Re: no catback? Im running no muffler... Basically, i just put a cut right before the muffler, and put a flange there, then made up some pipes to exit in stock locations. Very very similar to the loudmouth, just without a resonator. But with the flange, if i get a ticket, i can just swap on the stock exhaust in less than 5 minutes... Sounds awesome too. Up next im gunna cut the pipes off after the cats, and run true duels with turndowns before the axle. A friend of mine has it done on his SS.. sounds great.
Re: no catback? The new Z will be running true duals with no catback and the Porsche 924T has only a single bend in it now along with a supertrap muffler and it is almost a zero restriction exhaust (non catback). I have heard you loose torque if you cut off the catt converters or the catback but in the long run you end up with more power when you get more mods
Re: no catback? I am running Mac headers with an off road ypipe with bullet mufflers and a 3" turndown under the pass seat. It was my cheap exhaust but turned out to sound badass and saved a ton of weight too so its still on. The only thing I would do different is extend the pipe about 6" so it would dump right in front of the axle. This would take the sound away from the rear interior almost completely. But then again I cant even hear my exhaust over the subs anyway. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<small>[ July 28, 2002, 11:26 PM: Message edited by: YOOFORMULA ]</small>
<small>[ July 28, 2002, 11:26 PM: Message edited by: YOOFORMULA ]</small>
Launching!
Joined: Nov 2001
Posts: 246
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From: Plano, TX
Re: no catback? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bo0oost:
<strong>So why do people have catbacks?
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What? I can't hear you. LOL <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong>So why do people have catbacks?
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What? I can't hear you. LOL <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Staging Lane
Joined: Jan 2002
Posts: 69
Likes: 0
From: Dallas, Tx
Re: no catback? I ran open FLP's for the longest time..
Very loud, and had a lot more power that way.
I've got QTEC's in my Y pipe now running of a custom WOT open/close switch, and run B&B..
Switch is very cool.. hit the WOT switch, they open, let off the gas, and they close <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Very loud, and had a lot more power that way.
I've got QTEC's in my Y pipe now running of a custom WOT open/close switch, and run B&B..
Switch is very cool.. hit the WOT switch, they open, let off the gas, and they close <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Thread Starter
TECH Apprentice
Joined: Jun 2002
Posts: 360
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Re: no catback? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by YOOFORMULA:
<strong>I am running Mac headers with an off road ypipe with bullet mufflers and a 3" turndown under the pass seat. It was my cheap exhaust but turned out to sound badass and saved a ton of weight too so its still on. The only thing I would do different is extend the pipe about 6" so it would dump right in front of the axle. This would take the sound away from the rear interior almost completely. But then again I cant even hear my exhaust over the subs anyway. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Did you dyno with this setup?
I wonder if having an exhaust like this is *almost* as good as having true duals?
<strong>I am running Mac headers with an off road ypipe with bullet mufflers and a 3" turndown under the pass seat. It was my cheap exhaust but turned out to sound badass and saved a ton of weight too so its still on. The only thing I would do different is extend the pipe about 6" so it would dump right in front of the axle. This would take the sound away from the rear interior almost completely. But then again I cant even hear my exhaust over the subs anyway. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Did you dyno with this setup?
I wonder if having an exhaust like this is *almost* as good as having true duals?
