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gains with duals. 2 ?

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Old Jun 26, 2007 | 08:41 PM
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Default gains with duals. 2 ?

I'm heads cam and looking for alittle more Hp.I read the sticky,but was wondering if anyone is H/C/I and whent to duals afterwards and did it gain you any on the dyno,and how much from your catback with heads and cam going to duals. Second ? is I have hedman LT hedders and wanted to know if they make an X pipe for the ls1 hedman hedders
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john
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Old Jun 26, 2007 | 09:14 PM
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I switched from dual cut-outs after the the collectors to TD's (3" over the axle) with spiral flows. Peak horspower was about the same as through the cut-outs but it bicked up a bit of low end and a few RWTQ. Car drives better down low and has more trhottle response with the duals and it sounds way better. Also, the duals were good for 35+ RWHP over my ORY and flowmaster, but that's not really a fair argument since the Flomaster flows so bad anyways.
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Old Jun 26, 2007 | 11:47 PM
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gains should be significant, with your setup....for the x-pipe just search if you can find one im sure a shop would be able to fab it up along with the rest of the system
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Old Jun 27, 2007 | 07:10 AM
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Originally Posted by staringback05
gains should be significant, with your setup....for the x-pipe just search if you can find one im sure a shop would be able to fab it up along with the rest of the system
What do you consider significant,15rwhp.I have LT ory dynomouth with my heads ,cam, fast.I want a little more hp,but thought a bigger cam would only net about 10-15rwhp unless I whent alot bigger than my tr224,and lose a lot of lowend and driveability and tourque.so I thought by going with dual i would gain more midrange/lowend and hope fully atleast 10rwhp
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Old Jun 27, 2007 | 05:31 PM
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with that cam its mid range, with the duals youll have more up top.....they dont have the back pressure for low end power but they flow better then anything else, giving them everything up top and mid range.....i could see 10-15 over your catback now with duals
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Old Jun 27, 2007 | 05:37 PM
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Originally Posted by staringback05
with that cam its mid range, with the duals youll have more up top.....they dont have the back pressure for low end power but they flow better then anything else, giving them everything up top and mid range.....i could see 10-15 over your catback now with duals
I would be happy with 10-15 over what i have now.That would put me at 425-430 in an A4 plus better sound to boot
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Old Jun 27, 2007 | 05:50 PM
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your car will pull alot more up top....
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