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qtp headers vs lgm headers

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Old Jul 28, 2004 | 09:32 PM
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Default qtp headers vs lgm headers

Which style headers is best and why? I'd like to compare the 3"in pipes with high flow cats.
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Old Jul 28, 2004 | 11:45 PM
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Here's some R&D data
http://www.racingbeat.com/4_1%20head...headertest.htm
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Old Jul 29, 2004 | 05:47 AM
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A few months ago someone posted a bunch of dyno information on the LG headers. The modifications on the cars used were not extensive, but they were different cars and dynoed on different days, etc. It does give you the "flavor" of what they can do. Yesterday, QTP posted their initial untuned results on an 04. I plotted their data against the LG data and found the results to be very similar.

I am leaning to the QTP's for several reasons and have been waiting with much curiosity for them to start showing dyno results. They are easy to install and mate directly to the RT pipe with cats. They maintain all four O2 sensors. They are stainless steel front to back. While I was hoping for a good power increase in the mid-range (I don't track my car), I was pleasantly surprised at the high end not only with the peak numbers but with the relative flatness of the curve. If I were to buy today, I would personally go with the QTP system.
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Old Jul 29, 2004 | 06:03 PM
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ttt
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Old Jul 29, 2004 | 06:07 PM
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I'm personally leaning towards the LGM headers. I only found out about the QTP's the other day. I've heard different things about the tri-y design, and I've wanted one. The fact the LGM and QTP are kinda the same except for the header design is kinda getting me thinking about the QTP's more. If there was a dyno comparison on the two header systems (heads,cats,x-pipe) on the same car with tuning, I think it might be an interesting thing to see.
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Old Jul 30, 2004 | 11:23 AM
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Originally Posted by Antvette
I'm personally leaning towards the LGM headers. I only found out about the QTP's the other day. I've heard different things about the tri-y design, and I've wanted one. The fact the LGM and QTP are kinda the same except for the header design is kinda getting me thinking about the QTP's more. If there was a dyno comparison on the two header systems (heads,cats,x-pipe) on the same car with tuning, I think it might be an interesting thing to see.


It would be very interesting to see them square off on the dyno. I was leaning as well to the LG's but now I'm not so sure. QTP's dyno results were very impressive. I talk to Barry @ QTP last night on the phone, he's a real class act anyone with questions about the Tri-y design should give him a call.
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Old Aug 16, 2004 | 09:45 PM
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ttt
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Old Aug 16, 2004 | 09:55 PM
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Kooks can also give good results.

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Old Aug 16, 2004 | 11:14 PM
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Deja Vu
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Old Aug 16, 2004 | 11:53 PM
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Full power to the shields.
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Old Aug 17, 2004 | 05:44 AM
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Originally Posted by RobsC5
It would be very interesting to see them square off on the dyno. I was leaning as well to the LG's but now I'm not so sure. QTP's dyno results were very impressive. I talk to Barry @ QTP last night on the phone, he's a real class act anyone with questions about the Tri-y design should give him a call.
Did you guys make a decision yet?
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