Any input on the Quicktime dual cutout Y?
Any input on the Quicktime dual cutout Y? Has anyone installed the Quicktime dual cutout Y with their headers? I'm looking for feedback on quality, sound (drone due to their location) etc. Is the sound or drone easily controlled by only partially opening the cutouts for daily driving?
Thanks.
Thanks.
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Joined: Feb 2002
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From: HTownRacing.com, TX
Re: Any input on the Quicktime dual cutout Y? i can let you know later on this week...
headers and y arrive tomorrow and install will happen this weekend <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<small>[ December 09, 2002, 01:23 AM: Message edited by: X']['C WS6 ]</small>
headers and y arrive tomorrow and install will happen this weekend <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<small>[ December 09, 2002, 01:23 AM: Message edited by: X']['C WS6 ]</small>
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From: Troy, AL
Re: Any input on the Quicktime dual cutout Y? I think at mild to moderate power levels you're better off with one in the I-pipe especially if the Y-pipe and I-pipe aren't very restrictive for your power level.
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From: Troy, AL
Re: Any input on the Quicktime dual cutout Y? With a properly designed Y-pipe (like I had on my 422 setup at one time) you'll make just as much power through the Y-pipe as you will with open headers. We dyno tested this on my car.
We tried it with open headers.
Then we tried it with a 2.75" into 3" Y-pipe. We droped like 20-30 HP to the ground. It's been awhile so I don't remember the numbers but I do remember the idea.
Then we tried it with MTI's custom built 3" into 4" Y-pipe. It made the exact same power as the open headers.
So, in the case of the smaller Y-pipe I stood to make GREAT gains with dual cuttouts over a single cuttout. But, in the case of the larger Y-pipe I stood to gain zero HP with the dual cuttouts over a single one.
We tried it with open headers.
Then we tried it with a 2.75" into 3" Y-pipe. We droped like 20-30 HP to the ground. It's been awhile so I don't remember the numbers but I do remember the idea.
Then we tried it with MTI's custom built 3" into 4" Y-pipe. It made the exact same power as the open headers.
So, in the case of the smaller Y-pipe I stood to make GREAT gains with dual cuttouts over a single cuttout. But, in the case of the larger Y-pipe I stood to gain zero HP with the dual cuttouts over a single one.
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From: Troy, AL
Re: Any input on the Quicktime dual cutout Y? BTW, to put things in perspective in regards to flow. A 4" pipe will flow approximately %78 more volume at a given pressure than a 3" pipe. Doesn't seem like it would be that much difference does it?
<small>[ December 10, 2002, 02:53 PM: Message edited by: Colonel ]</small>
<small>[ December 10, 2002, 02:53 PM: Message edited by: Colonel ]</small>
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Re: Any input on the Quicktime dual cutout Y? well i have a very small y-pipe (2.5" non-mandrel bent) so it is like 2" at its worst. i have thought out opening the dual cutouts to see if i gained. most dont have a y pipe as bad as mine 
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Verdad Gallardo TECH Senior Member
Joined: Nov 2001
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From: Troy, AL
Re: Any input on the Quicktime dual cutout Y? How is your Y-pipe so bad? Custom job gone haywire?
If it's the stock Y with the flat spots, don't worry about them. GM was very careful not to impede flow with those flat spots. That pipe flows just as well as a round pipe.
If it's the stock Y with the flat spots, don't worry about them. GM was very careful not to impede flow with those flat spots. That pipe flows just as well as a round pipe.
Re: Any input on the Quicktime dual cutout Y? no it is just a quickie cheap job done at a local muffler shop. i have these dynatech headers and that drivers side is a severe bend to get it back to the y-collector. also, the muffler guy said he couldnt bend 3" that much. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> it was real temporary but now i am sick of it. i have dual cutouts on there too. still no one makes y's for dynatechs i guess.
Re: Any input on the Quicktime dual cutout Y? I guess the duals couldnt hurt but are they needed?
FWIW,I'm running Hooker LT's to a 3in Y to a 3.5in merge to a 3.5in cutout and thats working just fine.
Cant argue with 122MPH at 3450lbs <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
JS
<small>[ December 10, 2002, 11:30 PM: Message edited by: JS ]</small>
FWIW,I'm running Hooker LT's to a 3in Y to a 3.5in merge to a 3.5in cutout and thats working just fine.
Cant argue with 122MPH at 3450lbs <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
JS
<small>[ December 10, 2002, 11:30 PM: Message edited by: JS ]</small>
