03-23-2018, 10:11 PM | #89 | |
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I think your second point is the bigger issue; I have spotted multiple issues with the results from this test - the biggest question, beyond the WHP/WTQ swap power wise is how are these dyno's configured. I have been fortunate to have my Tuners remove correction factor - at least as much as possible - it creates too many final number issues. In the end a dyno is only a tool - measuring before and after - but I just don't think this test is correct for many reasons. Is it because there is in fact a lock-out? Maybe - but then the torque numbers will be astronomical if that is the case once it is unlocked. OP has not responded to this - so that doesn't help. |
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03-23-2018, 10:22 PM | #91 |
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03-23-2018, 10:43 PM | #92 |
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03-23-2018, 10:55 PM | #93 |
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Honest question... can you prove that? There's a lot of speculation on these forums, but no one has actually proven that their car was making lower power before their first service. I'm not choosing sides, I just want someone to prove it, one way or the other.
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03-23-2018, 11:17 PM | #95 |
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These are two completely useless dyno graphs. What happens below 3400 RPM is relevant as well... .
Newbie dyno operator? Take it somewhere that knows how to properly set up a car (including fanning it and dyno calibration) and do a complete pull, then you'll have a dyno chart that has any relevance. This is garbage. Oh, and the crap about the Mustang being the "best dyno in the world...". Uh, no. Maha, DD, Mustang... they all have their place and provide different results. Mustangs are absolutely not the benchmark though. |
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03-23-2018, 11:31 PM | #97 |
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Yes - as I have commented - multiple issues with this pull. I have asked some of the most basic questions and there has been no response from the OP. That said - I am not trying to tear down the OP - it's great they are least attempting to dyno the car - but the information coming from it seems to be significantly off - and the expertise not at the highest level.
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03-23-2018, 11:59 PM | #98 |
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These dyno runs are garbage due to obvious reasons mentioned by many others and it's not even worth arguing about it. However, I definitely don't believe the car makes more power after the break-in sevice, total BS in my opinion. Whoever claims this, please also provide your basis aside from your butt dyno.
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03-24-2018, 12:08 AM | #99 | ||
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03-24-2018, 12:39 AM | #100 |
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03-24-2018, 01:48 AM | #101 | |||
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I don't own M4 so don't visit there much but I doubt the de-tune theory applies there as well. |
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03-24-2018, 07:07 AM | #102 |
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It would make sense a new car would be slightly down on power.
Every BMW I've driven gets significantly better fuel economy after a couple thousand miles. Things need to wear in - rings, bearings, anything rotating against a seal, springs, etc. Then there's a transmission and diff too. And it's all expanding and contracting under heat/cool cycles. Then the block needs to be "seasoned" and exposed to lubricants, heated and cooled. Hence the reason for the break in service and driving recommendation which, if you did an oil analysis, would have high content of metals from the rings, bearing and various surfaces.
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03-24-2018, 07:59 AM | #103 | |
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Snap rocks blue with Bev Hills BMW plates ? Isn't she not far down the road from you in Pomona area I think ... and she's HOT as heck too ! How you feeling tho bro. Any better ?
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03-24-2018, 08:00 AM | #104 | |
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03-24-2018, 08:01 AM | #105 | |
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Since they don't make an M5"s"
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03-24-2018, 08:03 AM | #106 |
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this to is a moronic post.
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03-24-2018, 08:54 AM | #107 | |
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03-24-2018, 09:33 AM | #108 | |
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An engine bay with zero airflow going through it will heat up very quickly at full throttle, it makes sense that a car in this environment would make a ton of torque at lower RPM but start to pull timing and even reduce boost targets as the run progresses so that it's making less torque (and HP since HP is a calculation based on torque) at the high end. If that is what's going on, it makes sense that it would make an impressive amount of torque but a comparatively weak amount of horsepower. I hope he was trolling, of all the BMWs I've had I have to say my 135i was probably my favorite overall. Such an insanely great bargain and endlessly fun to drive! |
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03-24-2018, 10:05 AM | #109 | |
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That said - no having the fans as a part of the test doesn't help that is for sure -again depending on my point - how hot was it in the testing area? I heartily agree with you that IC fluids and other setup variables can have a significant affect on a test. From what I am seeing with THIS test however - is at least a combination of config/setup/procedural dyno testing issues AND maybe/likely other points that you bring up. As something is VERY odd and off about them. |
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03-24-2018, 12:24 PM | #110 | |
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Long story short: don't worry about the M5's power curve, it's clearly hauling some serious ass out in the real world! |
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