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Dual electric cutouts??

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Old Aug 7, 2007 | 07:36 AM
  #21  
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Thanks for all of your replies everyone!

And just to make sure the last part of my question gets covered, should I stay away or try to go towards one company?
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Old Aug 7, 2007 | 08:05 AM
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Originally Posted by reject
just a headsup, dual cutouts' you loose so much backpressure that you run slower, loud as all fkk, but your going slower....ask Trmin8r....he had 2 cutouts open and was getting beat by a corvette, closed them up and started pulling on the vette. just a headsup
Backpressure is not a good thing. That is not the reason he was faster.
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Old Aug 7, 2007 | 03:47 PM
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Originally Posted by ryanfx
Thanks for all of your replies everyone!

And just to make sure the last part of my question gets covered, should I stay away or try to go towards one company?
QTP is the most popular. Honestly i don't think it matters all that much. When you think about it, it's just a small piece of pipe w/ a hole in it, there is little area to "screw up" in (of course i say that, doesn't mean people can't make crappy cutouts). The only companies i can think of off the top of my head are QTP and FlowTech (i believe) and i would trust the QTP Stainless Steel ones, that's just me. But like i said, it's simply a pipe w/ a hole in it. Just make sure it seals good when they closed.
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Old Aug 7, 2007 | 05:14 PM
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well.. there's the whole motor assembly that goes bad on some people VERY quickly.
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Old Aug 7, 2007 | 06:23 PM
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Originally Posted by ryanfx
well.. there's the whole motor assembly that goes bad on some people VERY quickly.
Then personally i would stick w/ QTP. Mine work great, still do (make sure you do stainless IMO). I may end up removing them eventually though b/c clearance might become an issue once my new springs start to settle. Dunno yet, love the open engine sound.... can't decide
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Old Aug 7, 2007 | 07:46 PM
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QTP makes ****. Mine fell apart after two weeks and they tried to get me to pay to fix their pieces of ****. Go with McCord or DMH.
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Old Aug 7, 2007 | 07:53 PM
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Originally Posted by Ferocity02
QTP makes ****. Mine fell apart after two weeks and they tried to get me to pay to fix their pieces of ****. Go with McCord or DMH.
Sucks for you, mine work fine. There's always going to be an oddball product for any manufacturer, don't take my advice to heart... i would stick w/ majority vote. I'm simply a satisfied customer that can give QTP a +1
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Old Aug 7, 2007 | 08:07 PM
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Originally Posted by IHeartTurbo
Backpressure is not a good thing. That is not the reason he was faster.
when you lose THAT MUCH it is. i can feel the difference in the bottom end between closed and open
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Old Aug 7, 2007 | 08:21 PM
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Originally Posted by IHeartTurbo
Backpressure is not a good thing. That is not the reason he was faster.
you NEED back pressure, not alot but you still need it, just becuase it's loud dosnt mean it's fast... :
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Old Aug 7, 2007 | 08:23 PM
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Originally Posted by ryanfx
Thanks for all of your replies everyone!

And just to make sure the last part of my question gets covered, should I stay away or try to go towards one company?
QTP suck really bad and IMO they all suck, i dont think the electric motors are able to withstand all the heat and go out.
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Old Aug 7, 2007 | 08:26 PM
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Originally Posted by Ferocity02
Really? Hmm, well I sold it to some guy in south sac, hopefully the car is still in one piece. I actually took that y-pipe setup off and sold it seperately to some guy in the east bay. The car was pretty much stock when I sold it. I miss here so much!!!
Ya i remember it had a magnaflow cat back, and some suspension stuff and crome z06 wheels. Ya why did you sell it in the first place that thing was clean.
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Old Aug 8, 2007 | 08:04 AM
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Originally Posted by RedRallyeZ
when you lose THAT MUCH it is. i can feel the difference in the bottom end between closed and open
Originally Posted by reject
you NEED back pressure, not alot but you still need it, just becuase it's loud dosnt mean it's fast... :
No. Backpressure is never good. Smaller diameter piping has benefits, but it is not the backpressure that is creating more torque. It's the scavenging effect. Smaller pipes create a higher exhaust velocity, which creates more of a scavenging effect. This is good for low end power, bad for high end because it doesn't flow as much volume. If you really think backpressure is good, bolt a plate onto your collectors in place of the rest of your exhaust with a hole in it that's smaller than your collector diameter. This will create backpressure, but I guarantee you that you will be slower.

And who said loudness had anything to do with speed?
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Old Aug 8, 2007 | 10:22 AM
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i guess running open then closed on dyno/track runs dosnt prove nothing
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Old Aug 8, 2007 | 10:30 AM
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Originally Posted by reject
i guess running open then closed on dyno/track runs dosnt prove nothing
Did you not read what I wrote? I said that smaller diameter pipes will help, but it's not the backpressure that is doing it.
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Old Aug 8, 2007 | 10:33 AM
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CUTOUTS....not pipes
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Old Aug 8, 2007 | 10:38 AM
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Originally Posted by reject
CUTOUTS....not pipes
Yeah, running with the cutouts open is like running with really large pipes. Same effect.

If you still don't get it, go do some research.
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Old Aug 8, 2007 | 10:41 AM
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i'll leave it stand like that, wait for the numbers to come back proving what i have already seen before, running dual cutouts is going to make him go slower. we already went waaaay off topic from the OP.

to the OP: get a baseline dyno, then get it with both cutout's open. report back. thanks.
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Old Aug 8, 2007 | 10:43 AM
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Originally Posted by reject
i'll leave it stand like that, wait for the numbers to come back proving what i have already seen before, running dual cutouts is going to make him go slower. we already went waaaay off topic from the OP.

to the OP: get a baseline dyno, then get it with both cutout's open. report back. thanks.
I know he will make less torque with the cutouts open. I am not debating that. However, it's not the backpressure that makes running with the cutouts closed create more torque, it's the exhaust velocity.
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Old Aug 8, 2007 | 11:00 AM
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You'll see a bit better high end performance but yeah, your low end is going to suck ***. I have long tubes and just welded a single electric cutout on right past the Y. I still have low end power and it's still loud as **** when I open them up. It's great to see peoples faces @ a meet or show when you rev, then open the cutout and hit it again. I also recommend behind the Y because there's a relief in the floor pan there under the back passenger seat. I haven't lost a bit of ground clearance at all.
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Old Aug 10, 2007 | 10:54 PM
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Originally Posted by socmguy
You'll see a bit better high end performance but yeah, your low end is going to suck ***. I have long tubes and just welded a single electric cutout on right past the Y. I still have low end power and it's still loud as **** when I open them up. It's great to see peoples faces @ a meet or show when you rev, then open the cutout and hit it again. I also recommend behind the Y because there's a relief in the floor pan there under the back passenger seat. I haven't lost a bit of ground clearance at all.

Do you have cats? I'm running a catted y pipe with a borla and I don't know how much of a difference a cutout there would actually do.
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