QTP Manual Cutouts
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Teching In
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QTP Manual Cutouts I have a 2002 Camaro Z28 and i ordered two QTP Cutouts was planning to put them on before the Y pipe but after ordering them i was looking under the car and noticed that after the cat on the driver's side the pipe is flattened for ground clearance, so my question is what can be done to get the cutout in that spot because i know there is someone one on this site that has cutouts there. Thanks
well, an aftermarket would make it easier but I know that the user "uno99" has a stock y pipe and has dual cutouts on it so its possible. Send him a PM, he probably could get you some pictures. Right after the collector, before it is flattened is your best bet. Or go with an SLP ypipe and cutouts or just a single cutout after the ypipe. For the most power, LTs and an aftermarket ypipe would net you the best results because it will smooth out the flow of exhaust gases the best and let your engine breath the best.
Tech Resident
Joined: Jan 2006
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From: Philly
IMO, it's best to just run one cutout. I have mine in that area underneath the rear passenger's seat. No issues. That area was practically made for a cutout. On top of that, with stock manifolds and a stock y-pipe, everything I've ever seen shows that it's better to run the cutout after the y-merge so you get some scavenging out of the system. It may be a different story if you have a built motor with LT's and a H/C package, but on stock vehicles, everything I've always seen has showed one cutout to be superior to two.
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Teching In
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chocotaco are you only running one? and you said yours is by the passenger's seat so wouldn't that be before the y pipe or are you running full after market exhaust so its better to have it there for you since its not the stock exhaust system?
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IMO, it's best to just run one cutout. I have mine in that area underneath the rear passenger's seat. No issues. That area was practically made for a cutout. On top of that, with stock manifolds and a stock y-pipe, everything I've ever seen shows that it's better to run the cutout after the y-merge so you get some scavenging out of the system. It may be a different story if you have a built motor with LT's and a H/C package, but on stock vehicles, everything I've always seen has showed one cutout to be superior to two.
I am not sure where the cutoff is but it has to be well over the 500hp range to benefit from dual cutouts. yeah, that would be your best bet, along with a new ypipe. that really helps to wake things up and one cutout is plenty. I just know that some people are gung-hoe about their mods so I didnt want to tell you to not if thats what you really wanted to do.
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Teching In
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choco thanks for the picture quite helpful. how often do you have the plate off? is that your daily driver?
Tech Resident
Joined: Jan 2006
Posts: 5,117
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From: Philly
I lost it probably over a year ago. QTP just sent me a free replacement a little while ago, which was very nice of them, but I need to go get some nuts and bolts for it. Honestly, I don't know what my car sounds like with LT's and Corsa because my cutout has never been closed since the day I put it on.It used to be my daily driver, but I'm living in Philly now and my car's in NJ. I drive it one or two weekends a month, that's it. With gas prices what they are, I'm cool with that.
