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Old May 29, 2009 | 12:13 PM
  #1  
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Has anyone installed cut outs on their exhaust system? I will be purchasing GHL's in the fall and ran across the idea of adding cut outs and was wondering if it is worth the money and trouble to have it done?
Anyone with any thoughts, pro or con, please shoot them back to me please.
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Old May 29, 2009 | 12:34 PM
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There are a number of people who have installed cutouts. Do a search for cutouts, there are a bunch of threads out there.

http://forums.corvetteforum.com/c5-g...-cut-outs.html

I heard a set on a C5 Z06 at Carlisle a few years back and it sold me.

Pro ... they fun when shooting past slow cars around town. I'm sure my neighbors enjoy hearing me start the car in the garage @ 0530.

Con (not major concern) ... depending on your setup you may have some interior drone

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Old May 29, 2009 | 01:02 PM
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Originally Posted by Lowcash
There are a number of people who have installed cutouts. Do a search for cutouts, there are a bunch of threads out there.

http://forums.corvetteforum.com/c5-g...-cut-outs.html

I heard a set on a C5 Z06 at Carlisle a few years back and it sold me.

Pro ... they fun when shooting past slow cars around town. I'm sure my neighbors enjoy hearing me start the car in the garage @ 0530.

Con (not major concern) ... depending on your setup you may have some interior drone--but only pussies complain about drone.

There. Fixed it for ya.

I've got the borla straight pipes. DRONE ME PLEASE.
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Old May 29, 2009 | 01:17 PM
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i have them. Not electric ones though as they jsut fail it seems. They are welded into the Xpipe, and make a sound to catback can replicate. good for the track....here is a sound clip of mine with them off

http://www.youtube.com/watch?v=irQ84ZHI5Es
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Old May 29, 2009 | 02:00 PM
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Originally Posted by VGLNTE1
i have them. Not electric ones though as they jsut fail it seems. They are welded into the Xpipe, and make a sound to catback can replicate. good for the track....here is a sound clip of mine with them off

http://www.youtube.com/watch?v=irQ84ZHI5Es
nice
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Old May 29, 2009 | 02:10 PM
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DHM. Dave is great and you can't beat that 4 year unlimited warranty with no questions asked!
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Old May 29, 2009 | 04:43 PM
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I think on this site I saw a picture of a Vette with the exhaust coming out just below the gill vents. The hole was about the diameter of a softball; I thought they were unique and I liked them. I have made very preliminary inquirys but have been told, when opened they will ruin the paint. I am still looking into it.

If anyone has that picture I would like to see it again; I can't find it.

777
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Old May 29, 2009 | 05:58 PM
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Originally Posted by tbrent
DHM. Dave is great and you can't beat that 4 year unlimited warranty with no questions asked!




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Old May 29, 2009 | 06:55 PM
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i have the 3" QTP setup. I have had EACH motor rebuilt 3x now. the motors fail quite often and its getting annoying. BUT, i love the cutouts on my 427ci. the sound, is just amazing! I have no cats so its straight from the motor.

I also noticed a performance gain of about 15rwhp. So its def worth the money if you are looking for perf gain. Even on the track, i noticed about a tenth of a second gain.

I have an auto so the cutouts are located right on the down side of the "over axel" pipes. vid shows the rest.
http://videos.streetfire.net/video/D...-Z07_80241.htm
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Old May 29, 2009 | 07:13 PM
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Those oval ones are DMH? I went to their website and it only showed the round ones. I really like the low profile ovals...
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Old May 29, 2009 | 07:27 PM
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If you do it good luck with the project its a great mod
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Old May 29, 2009 | 07:36 PM
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Originally Posted by 1 BAD BURB
i have the 3" QTP setup. I have had EACH motor rebuilt 3x now. the motors fail quite often and its getting annoying. BUT, i love the cutouts on my 427ci. the sound, is just amazing! I have no cats so its straight from the motor.

I also noticed a performance gain of about 15rwhp. So its def worth the money if you are looking for perf gain. Even on the track, i noticed about a tenth of a second gain.

I have an auto so the cutouts are located right on the down side of the "over axel" pipes. vid shows the rest.
http://videos.streetfire.net/video/D...-Z07_80241.htm
I have QTP cutouts on my F350 with a 460 c.i. They have gotten stuck open and stuck closed from time to time. I use my truck in the mud and sand going on/off the beach surf fishing. I have had to take them a part and clean them a couple of times. They get all dirty/ gooky inside. When I take them a part, I clean them with brake cleaner and lube the gears up with a high temp grease. It works well. I thought mine quit, but they were just dirty and the little motor wasn't strong enough to over power the sand, dirt and rust build up. I have it down to a 30 min job or so. I also sealed them back up with high temp silicone.
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Old May 29, 2009 | 09:48 PM
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Originally Posted by 1 BAD BURB
i have the 3" QTP setup. I have had EACH motor rebuilt 3x now. the motors fail quite often and its getting annoying. BUT, i love the cutouts on my 427ci. the sound, is just amazing! I have no cats so its straight from the motor.

I also noticed a performance gain of about 15rwhp. So its def worth the money if you are looking for perf gain. Even on the track, i noticed about a tenth of a second gain.

I have an auto so the cutouts are located right on the down side of the "over axel" pipes. vid shows the rest.
http://videos.streetfire.net/video/D...-Z07_80241.htm


I'm on pair #2 now and I love the sound on with my stock setup. I have been tossing around the idea of changing over from Corsa to GHL catbacks and DHM.
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Old May 29, 2009 | 10:00 PM
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Originally Posted by WKMCD




I looked for these on their site but I don't find them, the low profile cut-outs - What gives

You have a part number? and $$ amount for the set?

Thanks,Matt
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Old May 29, 2009 | 11:02 PM
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Send a PM to forum member Patches - he has a set on his car and they look awesome. Bet he would be glad to share his experience with you.
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Old May 31, 2009 | 11:41 AM
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Ive had the QTP for 4 seasons and have had zero problems with them. Sorry for all your problems AJ. Get a set you will love them...
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Old May 31, 2009 | 12:00 PM
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Originally Posted by madmatt9471
I looked for these on their site but I don't find them, the low profile cut-outs - What gives

You have a part number? and $$ amount for the set?

Thanks,Matt
Give Dave a call. The low profile cutouts aren't on the website yet.
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Old Jun 1, 2009 | 11:33 PM
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working on a DHM and Race Ready C5 and C6 kit right now. Have to call them back tomorrow. Should have GP on them for eveyrone
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Old Jun 9, 2009 | 02:09 AM
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Originally Posted by c5 BearsFan
working on a DHM and Race Ready C5 and C6 kit right now. Have to call them back tomorrow. Should have GP on them for eveyrone
Don't forget about the GP...
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Old Jun 9, 2009 | 10:51 AM
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Originally Posted by madmatt9471
$$ amount for the set?

Thanks,Matt
$400 for the pair.

I have the same set and I really like them. I'm sure they would sound better with headers, but I'm only running manifolds.
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