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E90 330i MILV's headers BPC tune dyno disappointment
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06-14-2018, 10:11 PM | #23 |
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How did you measure HP at the "crank" if it was measured at the wheels? I'll never understand euro dyno measurements...
A dyno isnt a dick measuring stick - its a tool used for tuning. If you dont have a "before" measurement, you have no idea what you actually gained from your mods, or if what you expected matches reality. I would reccomend ditching the "pedal box" as the DME is just going to adapt whatever it does back to the original settings, and its not helping with a tune anyway. I think the adaptation reset is there, I'll talk to rjahl about that though as I've never had to use it. Last edited by hassmaschine; 06-15-2018 at 12:38 PM.. |
06-15-2018, 12:15 PM | #24 |
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Remove pedal box, reflash bpc or clear adaptations.. also this dyno seem peculiar. Freeing some back pressure from the stock exhaust would help also
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06-15-2018, 12:41 PM | #25 |
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Actually looking at this again, there could be another issue.
It's possible the RPM scale of the graph is wrong. If it redlined at 7200, but the graph only shows 6500, then it will show the wrong power because power is calculated from torque & RPM. Basically the graph could be off by 10%, which is a lot. But we have no idea what the dyno operator did, and also we know that max power isn't even reached until after 6500rpm. |
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06-15-2018, 01:06 PM | #26 | |
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Noir893.00 |
06-15-2018, 01:58 PM | #27 | |
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Without a wheel horsepower result to compare to what others results are (99% published N52 dynos) and a before dyno these results are borderline worthless. It seems the only thing out of line here is your expectations... On the plus side these actually look like whp results and the power/tq curves look very consistent. |
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06-16-2018, 08:40 AM | #28 | |
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I agree, but I don’t think its completely worthless. You can see DISA transitions or if power curve reached max power at the same rpm as 99% of all other dynos. What about 50-100 mph times ? If power is there and dyno is wrong then times should more or less match. What should be 50 -100 mph times for similar set up?
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06-16-2018, 08:50 AM | #29 | |
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I’m planning a dyno as soon as I learn how to adapt VVT from rjahl. Pedal box is already off the car.
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06-16-2018, 09:50 AM | #30 |
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I think bosch has whp dynos in europe.. we have it here in the middle east
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06-17-2018, 10:31 AM | #31 |
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INPA Instructions
Perhaps a mute point by now but I finally pulled the MSV70 from my storage box.
To re-learn the VVT on the MSV70 do the following; 1. With the ignition key ON and the engine OFF 2. Open INPA 3. Type F3 for E90 4. Select Engine and MSV70 fur N52 5. Type F8 for adaption 6. Type F8 for VVT adaption 7. Turn off the ignition and wait a few seconds 8. Turn on the ignition but do not start the engine and wait a few more seconds (15 or so), you will probably hear the VVT motor running and relearning the stops. 9. Turn off the ignition and wait a few seconds, then start the car as normal It might have a rough idle for a few seconds but it should settle down quickly. I'm not saying this will fix your problem. Too many unanswered questions regarding your Dyno. I think the MSV80 is the same or very similar. BTW, At first I found the German a pain PIA but now I mostly prefer the original German text over some dubious translation. If I do add translations, I like to keep the original German nearby. |
06-17-2018, 01:22 PM | #32 |
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rjahl
Hi, do i need to do this after milvs installation? Also a bpc flash for milvs does this when flashing? After installing the milvs i only kept ignition on for like 15 seconds two times so it may does this relearn automatically.. Tx
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06-17-2018, 09:57 PM | #35 | |
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50-100 times? That's another metric I don't think anyone has posted on here. It's hard to compare all euro-centric results vs what's available on here. Honestly, your graph looks like a WHP result. If so, great. If not, It's going to be hard/impossible/futile to compare without one... |
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06-18-2018, 02:26 PM | #36 |
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A dyno like that is probably best for comparing before and after to see the increase in power from modifications etc. It's not a dynojet so hard to really compare online and certainly not good for internet bragging rights.
I agree a timed 3rd gear pull, for instance, would probably tell you more and if you are on par with other cars with the same modifications.
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06-18-2018, 07:04 PM | #38 | |
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I’m guessing also because it’s Newton meters and some other European power measurement unit it might not follow the convention? Last edited by Biginboca; 06-18-2018 at 07:15 PM.. |
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06-18-2018, 08:55 PM | #39 |
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At this point may I just ask..... does the car feel any faster than before? What's the major difference in mid range and high end?
There is no baseline from your car so that's that, even if you find a whp dyno now what you get is just another number, there is very little point to it. I know the basic idea of MILVs but the power gain is just so hard to quantify; you need someone on a stock engine with a tune then dyno against a MILV equipped engine with a tune, and they have to be in similar condition.
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06-18-2018, 11:45 PM | #40 | |
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Of course, with no baseline it still doesn't really make any difference... |
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06-18-2018, 11:47 PM | #41 |
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06-21-2018, 08:06 AM | #43 | |
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Especially now after VVC Adaptation procedure I got a feeling it's even faster then dynoed. But I don't want to talk about my but dyno feelings. I will soon dyno again in different place and then I will see. It's not about how much do I gained after mods but rather how much hp it will reach after all the mods. Most of cars here get about 250 whp which should be around 290 Hp. I know it's just a number but since that number is 243 hp I am assuming something is wrong with the car and needs fixing.
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Last edited by Wally_84; 06-21-2018 at 08:17 AM.. |
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06-21-2018, 12:02 PM | #44 | |
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Some cars simply perform better or worse than others. With that being said, if you make it within 10% of others that are exactly modified the way you are, on the same Sdyno and the same weather conditions. |
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