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12-11-2013, 11:12 PM | #89 | |
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12-11-2013, 11:16 PM | #90 | |
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12-11-2013, 11:33 PM | #91 |
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I'm pretty impressed with the engine specs. 7600 rpm redline on a twin turbo car with 10:1 compression ratio? That's amazing.
The interior is also phenomenal looking. Even the rear seats are no joke! |
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12-11-2013, 11:34 PM | #92 |
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On the tuning discussion:
James, BMW's FI motors have been modestly under-rated. By your own points, they are making usually ~5% less that their rated crank hp according to most dyno's. Let's not sit here and expect the f80 to be making 400whp just yet. That'd be 50whp better than the typical s65. I also think the tuning paradigm has changed. The n54 was a special motor with a lot of potential that was easily accessible. The n55 is less so. The n20 taps out at ~270whp without hefty mods or e85, etc. I think BMW is now getting more comfortable pushing their turbo motors from the factory a bit further. And this new f80 application is going to be using two small turbos to eliminate lag - that is not a recipe for adding 100whp with headers and a tune. ... On the flip side, let's remember that the market for m5/m6 tuning is not that big and thus there may simply not be the urgency to break their ECUs open just yet. |
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12-11-2013, 11:53 PM | #93 |
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wtf!!! ???
BMW just lost me as a customer? or maybe, just maybe I am moving onto M5... or something like that... there is no way I want to be associated to Mitsubshi in any way sorry, but I am a snob.
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12-11-2013, 11:54 PM | #94 | |
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12-11-2013, 11:56 PM | #95 |
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I hope you are joking. Mitusbishi has been making turbochargers for a variety of cars for decades now. Very reliable ones too.
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12-12-2013, 12:00 AM | #96 |
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That M4 has WIN written all over it (it is in the flake of that paint)
The proportions just fit so well, designed into it. Well done BMW. Well done. The M3 is very nice, but does not look nearly as aggressive or sporty like the coupe. I suppose that is normally the case though due to the roofline being higher on the sedan. It becomes more clear in the videos. The M4 just looks better in motion. I also prefer the side bulges on the coupe, it has the entire panel shaped wider instead of just poking out the fenders. Flow. |
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12-12-2013, 12:05 AM | #97 | |
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Hmmmm. I see some forged internals in the specs, and additional cooling, but what will be the failure point with additional boost? Personally, I would leave it bone stock. I think it will be an excellent package from the factory. Maybe give it the same treatment that my car now has, a PPK and PE. Sweet spot. |
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12-12-2013, 12:09 AM | #98 | |
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Granted, it might not have as much to gain as the N54, but it will show nice gains as I feel the 18psi and tuning is no where near maxed out.
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12-12-2013, 12:13 AM | #99 |
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I would bet that small turbos spinning at 200,000 rpm are quite close to being maxed out.
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12-12-2013, 12:15 AM | #100 |
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It's OK, we all have our blind spots when it comes to knowledge. If you want a high-pressure turbo that's going to run for years without coking, fragging, etc. Mitsubishi is just about your only choice when it comes to proven performance and reliability (there's several examples of makes that fall into one or the other but not both.)
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12-12-2013, 12:16 AM | #101 | |
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You have seen the specs on these turbos, size of the wheels, know the VE etc? Like I said, it would be unwise to have components be so close to the edge, makes BMW very susceptible for premature failure claims.
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12-12-2013, 12:18 AM | #102 |
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Everything seems promising thus far. Although i'm probably keeping the E90 for a while, I must admit I haven't been this excited over the release of a new car in a while.
The Gran Turismo 6 release M4 debut was also equally stunning. Sounds like the Inline-6 ended up not sounding like a lawn mower based on the official videos and the noises it makes in GT6. We'll see this coming year whether the sound and driving feel is on-par.
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12-12-2013, 12:21 AM | #103 |
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I am not saying anything about the ability to find extra hp in other areas, I was just saying from the engineering stand point, 200,000rpm is pretty incredible for a turbo already. I don't think higher psi would be a good idea.
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12-12-2013, 12:30 AM | #105 |
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I think just like tuning our N20's, extra PSI means a reduction in longevity. If the target is the OEM turbo lives to 120k, that the increase in boost of 10-15% could equate to a similar shortening in life. Which if that means the turbo dies at 90k now, well there is the excuse to upgrade down the road.
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12-12-2013, 12:31 AM | #106 |
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12-12-2013, 12:33 AM | #107 | |
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12-12-2013, 12:35 AM | #108 | |
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12-12-2013, 12:41 AM | #109 | |
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I had a BMS stage 1 for awhile, took it off and sold it(helped fund my top end rebuild on the E36/7) as I wait for stage 2 to come out of Beta and show electronic solenoid control. But my finances are changing enough next year where it might be silly to mod the F30 and might just order an F80 in 6-12 months.
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12-12-2013, 12:43 AM | #110 | |
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