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10-18-2007, 10:08 AM | #1 |
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Garage List 2007 Porsche 997 GT ... [8.50]
2005 Mercedes Benz ... [0.00] 2008 E92 M3 (Bought ... [0.00] 2007 E93 335i conve ... [0.00] 2006 E92 325i Coupe ... [0.00] 2001 E46 M3 (Sold S ... [0.00] |
V8 M3 at altitude a disappointment....
Well i stay at altitude and buying an M3 here in Johannesburg will be more of a status thing ... the motoring in the star newspaper tested the M3 vs RS4 vs 335i ... and the 335i was quicker ... bottom line it is just quicker ... i got the M3 ordered and now just wonder if i should cancel ... really not keen anymore .... its like the golf 5 R32 vs Golf 5 Gti .... will post a scan of the article ...
still have not driven it ... my dealer drove the car at gerotek and he said he is disappointed
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10-18-2007, 10:25 AM | #2 |
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+1
BUT, it is faster than the RS4 and much more “hard-core” than the 335. M3 = image (I get mine soon )
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10-18-2007, 10:37 AM | #3 |
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Yeah any NA car at altitude is going to suffer the same way. Even a Z06 is going to lose power. Should be no surprise
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10-18-2007, 11:12 AM | #4 |
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My $0.02
Though slower, the M should still be more fun to drive. My S2000 is as slow as a neon, but is one of the best times to be had behind the wheel of any car today. I must say, if Hyundai made a four seat which out performed the M in all ways, I would seriously consider buying one. |
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10-18-2007, 11:31 AM | #5 |
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Did the article quantify the difference at all? Looking forward to the scans.
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10-18-2007, 12:52 PM | #7 |
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10-18-2007, 01:15 PM | #8 | |
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10-18-2007, 01:20 PM | #9 |
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10-18-2007, 02:03 PM | #10 |
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I live about 2-3 feet above. No Katrina floods 4tw.
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10-18-2007, 02:44 PM | #12 | |
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10-18-2007, 02:45 PM | #13 | |
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10-18-2007, 11:27 PM | #14 |
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10-19-2007, 02:40 AM | #15 | |
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Not to mention an X5 with twin turbos and PROcede would be pretty sick.
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10-20-2007, 03:07 AM | #17 |
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Sorry, all off-topic posts removed. Let's please keep these threads on-topic. Thanks.
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10-21-2007, 09:14 AM | #18 | |
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However -- the engine doesn't feel altitude above sea level, but density altitude -- which includes temperature and humidity. This can easily result in a much higher effective altitude. E.g, on a muggy 85F summer day in Johannesburg, the density altitude could be 9,000 ft (2743 m). That equates to about 27.4% power loss. Like horsepower, torque is also reduced by altitude. Even at sea level the 335i has more torque than the e90 M3, across a much wider range. This differential would be magnified at higher altitudes. Because of all these effects, it's easily possible a 335i could out-accelerate an e90 M3 at higher density altitudes. However the same is true for many normally-aspirated vs turbocharged comparisons. In Johannesburg, or Flagstaff, AZ on a hot day, a Dodge Neon SRT-4 could probably out-accelerate a Porsche 911 Carrera. It doesn't mean I'd rather have a Neon than the 911, but it illustrates how great the effect of density altitude on vehicle performance. |
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10-21-2007, 02:55 PM | #19 | |
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Many problems
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10-22-2007, 12:07 AM | #20 | |||
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10-22-2007, 12:53 AM | #21 |
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Ok, we have definitely achieved our quota.
/summon Procede posts. Seriously, how long can we go on talking about the idea that an engine with a design that incorporates parts designed to operate at altitude bests an engine that does not include those parts? Sell the OP some fenders from the other thread and call it a day. |
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10-23-2007, 08:12 AM | #22 |
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All these theories and calculations sound good, but how do you explain that the Z4 M Coupe is quicker than the new M3 according to tests both conducted in Johannesburg by the same magazine? 5.3 vs 5.6 sec (cars in action)
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