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QTP stainless cutout?

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Old Dec 22, 2006 | 08:04 PM
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Default QTP stainless cutout?

i got one and noticed that there is a lip of metal where the two pieces are welded inside. should I grind/smooth this down? i know this would increase flow with the cutout open but it will probably be less efficient closed b/c gases will get trapped there. Is that lip there for a reason? should I leave it be?
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Old Dec 22, 2006 | 09:05 PM
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Any opinions?
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Old Dec 22, 2006 | 10:52 PM
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Doubt it will make a big difference. But if it's bugging you, get rid of it.
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Old Dec 23, 2006 | 02:18 AM
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That lips there because its a sloppy job. My flowtech cutout that I butchered was horrible.

You can fix it, but it's not going to gain you anything. When the cutout is open, you have to remember that you've now got two 3" paths for the exhaust. It's not like it's all trying to flow out of the cutout.

Think of it more as a pressure relief than an exhaust diverter....
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Old Jan 24, 2007 | 09:23 AM
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Originally Posted by TheBlurLS1
That lips there because its a sloppy job. My flowtech cutout that I butchered was horrible.

You can fix it, but it's not going to gain you anything. When the cutout is open, you have to remember that you've now got two 3" paths for the exhaust. It's not like it's all trying to flow out of the cutout.

Think of it more as a pressure relief than an exhaust diverter....
Yeah, it has two 3'' paths but one has less pressure and it is closer for the exhaust to escape. The 3'' cutout has such a lip that it looks more like a 2'' cutout, I agree with little gains, but nothing, I doubt that. With a lip like that more will be forced out the rest of the exhaust rather than bypassed out the cutout. (ie w/lip 40% gases cutout, 60%through catback) vs. (50%cutout, 50% through catback). Thanks for the replies guys!
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Old Jan 24, 2007 | 10:00 AM
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I have the QTP cutout, I didn't notice any lip on mine. But it is a quality piece and gives a nice throaty obnoxious sound.
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Old Jan 24, 2007 | 11:57 AM
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lucky you!

Originally Posted by JerseyLS1TA
I have the QTP cutout, I didn't notice any lip on mine. But it is a quality piece and gives a nice throaty obnoxious sound.
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Old Jan 24, 2007 | 12:27 PM
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yea my QTP looked like crap too.... shitty welds also....you could see light through in a couple places that I had to touch up.

what do you expect out of china
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Old Jan 24, 2007 | 01:52 PM
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98camaroLS1M6
You need a lip for the othe pipe to weld to. You do not want the weld to crack Also the cut in the staright pipe is on a angle which make it large than a 3" diameter hole.

ilirw325
Mind your business. And for your info we make them in house, so quick talking smack.
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Old Jan 24, 2007 | 01:58 PM
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I have had no problems with mine and been very happy with it.
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Old Jan 24, 2007 | 01:58 PM
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Mine had a little bit of a lip but the welds looked good, sounds pretty good tho so the lip doesn't bother me at all
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Old Jan 24, 2007 | 05:40 PM
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[QUOTE=Quick Time]98camaroLS1M6
You need a lip for the othe pipe to weld to. You do not want the weld to crack Also the cut in the staright pipe is on a angle which make it large than a 3" diameter hole.

I definitely understand why there is a lip now, I love QTP products(just got your headers), I just wanted to know if taking that lip down by using a dremel would gain a little more power(minimal). My belief is yes. Thanks QTP for awesome products.
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Old Jan 24, 2007 | 05:45 PM
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Your dremel is going to have a helluva time with grinding that down! I'd use an air die grinder and a rotary file.
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Old Jan 24, 2007 | 06:29 PM
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die grinder FTW then.
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