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04-19-2011, 10:21 AM | #1 |
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XPipe Questions - HP & TQ Gains?
1. How much horsepower and torque do XPipes really give?
2. Is a tune necessary to deem more power? 3. Is secondary cat delete enough or is primary cat delete necessary as well? primary cats -> fabspeed xpipe -> megan racing mufflers + tune.
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2015 Porsche 991.1 GT3 2015 F80 M3 -- Individual; Space Grey Last edited by saeedg48; 04-19-2011 at 11:25 AM.. |
04-19-2011, 10:27 AM | #3 |
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15-20HP on xpipe only add another 3-5 on a axle back
deleting secondary will give you a little more maybe another 3-5 but most people use 100-200 cel secondary cat to avoid the nasty smell. but if you want a full HP and TQ remove the primary and secondary cat and make sure to keep a resonator to avoid rasp on the exhaust. oh i heard tuning it will give you a total of 30-35 i dont know... just reading from people's results.
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04-19-2011, 11:06 AM | #5 |
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I am just running 200cpi metallic cats in a riss racing pipe and the results were not just sound. There was a major bump in power even without the tune.
Dave
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04-19-2011, 03:12 PM | #6 |
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Gains noticeable, but without a tune your top end will be non existant!
I have zero cats and twin resonators
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04-19-2011, 04:10 PM | #7 |
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In general speaking:
bigger pipping + better flow = more power. No cats = big power gain = loud Smaller piping + better flow = more low end torque = better response It depends what's the most important to you. |
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04-19-2011, 04:59 PM | #8 |
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04-19-2011, 05:18 PM | #9 |
4th down; 4th quarter? Renegade.
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04-19-2011, 05:22 PM | #10 | |
4th down; 4th quarter? Renegade.
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2 Tune will give more. IMHO not a must unless you are going catless. 3 2nd cat delete will give modest gains. Doubt you will feel the difference. |
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04-19-2011, 05:33 PM | #11 |
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heh, my Akrapovic made power everywhere about 2500 rpm, and the piping is about the same as stock it's just better designed.
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04-19-2011, 06:13 PM | #12 |
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That's not *entirely* true - a secondary cat delete provides a very noticeable power bump.
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04-19-2011, 06:31 PM | #13 |
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04-19-2011, 06:36 PM | #14 |
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I can only speak for the change from adding an X-pipe and a tune at the same time (Challenge X-pipe with HFC's and ESS tune). the gains were certainly noticeable. there is a significant change in sound and a noticeable increase in power. I felt an increase in torque down low for one thing. However, a more objective measure I also noticed was how much wheelspin I would get during gear changes on the DCT and the amount of wheelspin throughout first gear.
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04-19-2011, 06:39 PM | #15 | |
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Quote:
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04-19-2011, 09:27 PM | #17 | |
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Sorry man disagree, my cars rips to 8400rpm like a scalded dog. Dave
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04-20-2011, 01:00 AM | #18 |
4th down; 4th quarter? Renegade.
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04-20-2011, 08:41 AM | #19 |
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My car with a tune and Xpipe with OEM backbox gained peak HP of about 24HP, but the gains were practically across the entire RPM range. Torque increased BIG time, especially at the bottom end.
I will post a dyno graph later. |
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04-20-2011, 08:51 AM | #20 |
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04-20-2011, 10:45 AM | #22 |
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eventhough there is tons of dyno proofs , i cant make myself blieve those could gain that much HP!
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