cut-outs?
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TECH Senior Member
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Joined: Dec 2004
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From: Tomball/Nacogdoches TX
cut-outs? I've heard mixed feelings about them and I wanna know the truth.
Do they incrase or decrease hp?
Do they screw with your valves because there's no back pressure if left open all the time?
Do they incrase or decrease hp?
Do they screw with your valves because there's no back pressure if left open all the time?
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Teching In
Joined: May 2005
Posts: 5
Likes: 0
From: Killeen, Texas
I went to Dallas to have my car tuned. Aguy that works there told me they dynoed a car with cut outs and a magnaflow. they dynoed it first with the cut outs in and then with them out. There was no change in horse power. Now I'm not saying that they aren't great or that they don't produce horse power. All I'm saying is if you don't mind a loud car, get the magnaflow and skip the cut out. I like it loud myself.
On The Tree
Joined: Aug 2004
Posts: 118
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From: Houston
cut out You should hear my car. The cut out open makes so much difference then with it being closed. Not only can you hear the difference, you can feel the difference. I think my cut-out open adds about 7 to 10 more horsepower. It will not effect the valves in any way. The only thing that might happen is your check engine light may light up due to the computer reading a change in HP and TRQ.
Joined: Sep 2004
Posts: 2,447
Likes: 6
From: Grand Junction, CO / Tomball, TX
your o2 sensors might go out from the heat too, or they will read wrong and your ses light will stay on. Mine comes on about 5 mins after driving but its no big deal
I was hesitant also when I got my cutout. But glad I did now. You can feel the difference in the seat of your pants. I also heard people say they sound like ***. But mine sounds awesome. I sounds like *** without the cats, so I put the cats back on and it sounds great. Where you put the cutout makes a big difference in sound also. I put mine just before the axle. Dual cutouts are a waste of money IMO. 
You might as well get the electric opener also. I have mine on order from DMH performance: http://www.dmhperformance.com/
I've heard good things about this cutout. It cost alittle more, but comes with a 4 year warranty. I've heard that the QTP cutout has problems sometimes.
You might as well get the electric opener also. I have mine on order from DMH performance: http://www.dmhperformance.com/
I've heard good things about this cutout. It cost alittle more, but comes with a 4 year warranty. I've heard that the QTP cutout has problems sometimes.
Banned
Joined: Nov 2001
Posts: 1,805
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From: HOUSTON, TEXAS
I have a set of the Mccord electric Plates that I will sell paid 250ish, there brand new, have the dual set up, 2.5 flanges on them. I was wanting to get 190 for both, wont seperate them. Was for the vette, but decided to keep the car stock.
JET
JET
Originally Posted by Britz
I went to Dallas to have my car tuned. Aguy that works there told me they dynoed a car with cut outs and a magnaflow. they dynoed it first with the cut outs in and then with them out. There was no change in horse power. Now I'm not saying that they aren't great or that they don't produce horse power. All I'm saying is if you don't mind a loud car, get the magnaflow and skip the cut out. I like it loud myself.