12-26-2022, 08:42 AM | #23 |
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Hi guys,
here is my stock tune run datalog on Dyno with engine hood closed, i'm wondering is this too hot? because what i see from your reply you also have temperature around 120F? forgive me if i'm wrong. ambient temperature from my place usualy around 86 - 91F. https://www.bootmod3.net/log?id=639a...0b431774f98c9d please let me know from what you see at datalog |
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12-26-2022, 09:49 AM | #24 | |
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Are you on the stock turbo? Is this a N55? None of this makes sense.
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12-26-2022, 10:50 AM | #25 | |
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This lines up with what I observe in real time with BimmerLink. After all the discussion I was expecting to see heat soak but that wasn’t the case. |
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12-26-2022, 11:31 AM | #26 | |
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https://f87.bimmerpost.com/forums/sh...8#post29287488 Just so I'm clear about my methodology: OP committed to doing log, said between 3-4PM he would complete one, and posted it up. I checked the historic weather data for his location based on his profile: The Log: https://www.bootmod3.net/log?id=6311...90c6042bb34573 The Weather data: https://www.timeanddate.com/weather/...th=9&year=2021 About 84F So we have 106F starting - Aprox 22F over ambient 96F Ending - Aprox 12F over ambient Runtime Approximately 12 seconds in 3rd gear This is a VRSF 5" and 12-18F sounds reasonable, so believe you're right! Still, please post a log if you have one - coming across them on this side of the forum is really difficult.
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Last edited by AmuroRay; 12-26-2022 at 11:45 AM.. |
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12-26-2022, 04:34 PM | #27 |
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Ambient temps climb back up this week here, so I’ll try to pull together some fresh data for the conversation. IATs definitely climb through each successive gear through longer pulls that’s for sure.
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12-26-2022, 07:07 PM | #28 | |
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Yes this datalog i took when i'm doing custom tune and the hood closed because it's requested by the Dyno Operator to make a condition like a "real road". The dyno operator is reputable tuner here in Indonesia. I think the PSI is in the absolute setting? so it have to reduce the number by 14psi-ish? yesss it is a stock turbo and N55 F87 how high the IAT should be in good term with my ambient temperature? i do want to change the intercooler, but i'm affraid that will not help a lot for my case. how high the timing ignition is good term with the 93 octane? |
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12-29-2022, 01:16 AM | #29 |
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I thought I responded - new intercooler, dyno hood open. Zero airflow at 100% load and stationary - worst case scenario, but also not realistic
Last edited by AmuroRay; 12-29-2022 at 01:38 AM.. |
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12-29-2022, 01:37 AM | #30 | |
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15F+ in a multiple gear pull - this is also with the most dense fin pack out there 18fins/inch) so I’d think a CSF would be slightly worse. M2 guys do not like taking logs for whatever reason, and a lot of old links are broken, so it’s hard to compare and see, I have to operate of memory. Last edited by AmuroRay; 12-29-2022 at 02:30 PM.. |
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12-29-2022, 01:17 PM | #31 |
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Here is a video of my IAT and Boost gauges during a spirited canyon run for reference. Easier than fooling with my eNet cable for connectivity. This was taken after letting the car sit for a bit to heat soak the engine bay.
- 2017 N55B30T0 Powered M2 - BM3 S291 tune - CSF Intercooler - Active Autowerke Catted Downpipe - Turner Chargepipe - 65* fahrenheit ambient I want to log an entire session on track but that proves to be a giant pain in the ass with a phone or laptop. Hope this is interesting to someone. Last edited by ///393; 12-29-2022 at 01:23 PM.. |
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12-29-2022, 02:40 PM | #32 |
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Well, It doesn’t say much, but it looks like your cruising and even a short WOT shot goes from a low of approx 14 above ambient to a high of 20f above during cruise and 30f above at what appears to be stop and go.
Here is a similar profile intercooler - 6.5 competition This is a PWG, 40F ambient https://x3.xbimmers.com/forums/showthread.php?t=1688931 Gear: 2nd 3rd 4th 5th (not complete) Absolute temp peak (F) 54 46 54 61 Above ambient (F) 14 6 14 21 Here is an EWG (same IC, F30) 79F https://f30.bimmerpost.com/forums/sh....php?t=1752195 Gear: 3rd 4th(not complete) Absolute temp peak(F) 92 94 Above ambient (F) 13 15 Last edited by AmuroRay; 12-29-2022 at 03:30 PM.. |
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12-29-2022, 03:33 PM | #33 | |
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I can go beat on it for an hour and it’ll do the same. Point is, 13 above ambient ain’t 20+ |
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12-29-2022, 03:49 PM | #34 | |
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look again at what I posted. |
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12-29-2022, 04:07 PM | #35 | |
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When the car is under WOT with this setup temps drop down to 12-13 above ambient consistently and then creep back up slightly as expected through the gears. IATs will spike in normal driving around town as high as 30-40 over ambient but who cares when you put some boost in it they instantly drop back down to the range above which is all that matters. I could care less about my IAT as I pull into a parking garage. |
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12-29-2022, 04:17 PM | #36 | |||
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If your pull is literally 2 seconds in one gear - no it doesn’t matter. If you never do a multiple gear pull - it doesn’t matter. If you don’t track, it doesn’t matter. Point blank, I already told him the CSF is decent for what it is, and I’ll stand by my statement that it’s good for 15 -20F - above ambient, with the statement on multiple gear pulls, which is clearly what I must have saw. |
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12-29-2022, 04:27 PM | #37 | |||
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You have a funny way of saying “I was wrong” Ray. |
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01-03-2023, 11:11 AM | #38 |
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Read my last post again - what do you think "you're right" means
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Last edited by AmuroRay; 01-03-2023 at 03:40 PM.. |
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01-03-2023, 02:39 PM | #39 | |
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I went back and looked at old logs from fall ‘21 and historical weather and the best it could muster in those logs through full, 2-4 pulls was around 20* over ambient. The more you pressurize the IC, the lower your IATs drop (duh) but what’s interesting to me is how you can manipulate results by starting from a lower IAT. Meaning, if I roll into full 3-4 pull after being off boost when IATs have climbed I see a higher delta than if you cheat em down with some boost and THEN hit a full 3-4 pull. Unfortunately my closest, safest place to demonstrate this with data logs is crawling with losers with radar guns so I can’t support this with logs but once I started running an IAT & boost gauge and keeping an eye on em this really stood out. |
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02-25-2023, 10:28 PM | #41 |
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Hi,
thank you for your reply, how do i check the map sensor is bad or not? i already tried to run diagnostic and there is no error code related the MAP Sensor. is there any other way to check it? please let me know thank you. |
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02-28-2023, 04:00 PM | #42 |
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I got Different reading on the MAF versus actual plus I got deferent reading on both map sensors ie boost before turbo boost after turbo was deferent
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