02-10-2020, 12:42 PM | #23 | ||||
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02-10-2020, 01:53 PM | #25 |
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02-10-2020, 01:54 PM | #26 |
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Mustang dyno
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02-10-2020, 01:56 PM | #27 |
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What's your quarter mile time? I raced one with pretty much your mods last summer in Mexico, I was pulling and we only went to 130mph. He did a 11.6 in the 1/4
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02-10-2020, 02:40 PM | #28 |
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Other than stepping on the toes of another more expensive model in the lineup (the M8 in this case), why would manufacturers under report power figures? Wouldn't it help sell/market to advertise the true higher values? Is there some Euro emissions or tax laws that benefit reporting a lower value? Badass looking car OP.
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02-10-2020, 02:51 PM | #29 | |
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02-10-2020, 03:01 PM | #31 | |
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02-10-2020, 03:58 PM | #32 |
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I will honestly need to claim ignorance on your mods and what they deliver. That said if they turn your m235i into the equivalent of a M2C then the M850i can outperform it on the track no questions asked. Randy Pobst turned 1:39.40 at Laguna Seca in a M850i and 1:40.83 in a M2C. To that point not sure whom was behind the wheel of the M850i you raced but your driving skills may have been the difference more so than the car.
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02-10-2020, 04:08 PM | #33 | |
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Interesting figures. Its sounds decently quick, although - at this point M8 could be better choice due to its set up. You car looks bagged. If I had to be pushed for a choice, like would grab the G80 M3 Comp, unless the grill is so bad it hurts my eyes. Other than that, I will wait for the 911 GTS,I hope the fix that stupid radio issue that does not allow you to play blue tooth audio right away. |
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02-10-2020, 04:25 PM | #34 | |
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The truth... Dyno whp is exaggerated and overrating the hp. Also, different types of dynos produce different results. All car manufacturers are required by law to give accurate engine specifications. And so they do. Take all dyno results with a grain of salt. (Or knock off 75hp ish... depending on humidity, air pressure, type of dyno, etc.). |
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02-10-2020, 04:37 PM | #35 | |
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02-10-2020, 08:01 PM | #36 |
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I don't like that stripe, but the intake accents are absolute fire.
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02-10-2020, 08:04 PM | #37 | ||
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02-10-2020, 08:28 PM | #38 | ||
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02-10-2020, 08:29 PM | #39 | |
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Official manufacturer power rating are highly controlled and regulated by strict standards. In the past, the testing standards required manufacturers to test in steady state (constant RPM) to obtain power ratings. The engine would be run at max load at a given RPM for a few minutes to let it stabilize, take the power reading and then set at the next RPM point. This process repeated for the entire powerband. This is the most accurate and repeatable manner to rate an engine. An engine can make different power in transient state (while accelersting) than in steady state (at constant RPM). Turbo engines, particularly ones with modern control systems, tend to make more power in transient in the mid to high RPM while making less in the lower RPM. To allow manufacturers to take advantage of these characteristics, the testing standards have been amended to allow manufacturers to chose to test in either transient or steady state. BMW has simply chosen to keep testing using the traditional steady state method for their power ratings. Since most chassis dyno tests are done in transient state, it is normal for them to show higher values than expected from the official ratings. Further, modern engines, particularly forced induction ones, can compensate for atmospheric conditions and dyno results should therefore not be corrected, as specified by the testing standards. Shops testing on chassis dyno often still correct the numbers for atmospheric conditions, which cam falsify the results.
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02-10-2020, 09:05 PM | #40 |
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The question remains, what's the baseline #'s (same dyno) for a bone stock M8 and is the difference the same % gain as those of the M850's?
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02-10-2020, 09:13 PM | #42 | |
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02-10-2020, 09:31 PM | #43 |
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Wheel horsepower is just crank horsepower after taxes.
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02-10-2020, 09:44 PM | #44 | ||
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