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11-16-2011, 11:24 AM | #45 |
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I would not anticipate an increase in sound since the OEM headers are already catless.
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11-16-2011, 12:02 PM | #46 |
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If they flow better, I'd expect the exhaust to be at least a little bit louder. At least that was the case with my previous 350z which also has catless headers. It wasn't a huge increase though.
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11-16-2011, 12:09 PM | #48 |
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We will have to test each combination after the headers are released, before quoting specific power figured for each one.
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11-16-2011, 12:21 PM | #49 | ||
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So I do agree that hotter EGT's mean better flow however, with the S65, keeping combustion chamber temps down slightly compared to quicker exhaust flow from hotter header temps is better for performance. Maximizing timing is the #1 thing you can do on an S65 for added performance and all of PG's dyno testing of 100 octane and Shiv's use of WM on an otherwise stock engine proves it.
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11-16-2011, 01:26 PM | #51 | |
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11-16-2011, 01:28 PM | #52 | |
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Quote:
http://www.m3post.com/forums/showthr...ight=Moonstone
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11-16-2011, 01:32 PM | #53 | |
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Very True. This 8,400rpm stuff is new to most of us
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11-16-2011, 01:34 PM | #54 |
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So in theory, you pair this with the MRF Exhaust system and Tune - $3,200 + $3,900 for the headers + $1,500 installation = $8,600.
Assuming calculated gains claimed by both MRF and M24: Total = 500HP/ 365TQ DANG.
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11-16-2011, 01:36 PM | #55 | |
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11-16-2011, 01:42 PM | #56 | |
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11-16-2011, 01:55 PM | #57 |
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I work on engines for a living..... they are pretty big engines though!!!
I am also lisenced to work on the automotive stuff but as far as money is concerned a Heavy Equipment pays bigger, pardon the pun! |
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11-16-2011, 01:58 PM | #58 |
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very interesting
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11-16-2011, 02:53 PM | #59 |
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I have never had good luck adding up the claimed gains from a bunch of mods and then finding the total of those gains on the dyno. But the claims for the headers are significant -- as much as the nest best mod, a track pipe, and about 8 times better than the most popular mod, a more powerful sounding rear exhaust.
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11-17-2011, 08:16 AM | #61 |
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There will not be a significant weight savings, most likely, but we will provide weight figures once M24 finalizes their header design.
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11-17-2011, 02:57 PM | #62 | |
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11-18-2011, 07:11 AM | #63 |
E46 + E90 + F80
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11-18-2011, 10:10 PM | #64 |
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11-19-2011, 08:07 AM | #66 |
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Ilia, Nate: Ok, so you have the TEST CAR chosen (Lucky Guy and sorry Philip), when can we expect dyno results?
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