09-12-2021, 09:59 PM | #45 | |
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Either get a custom tune or JB4, but yeah I did do JB4 to bump up boost. Would definitely advise getting a custom tune as you have turbos
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2021 M5 Competition | Imola red
2020 Z4 M40i | Misano blue Pure850/PI/LPFP Gone: 2018 M550i xDrive | DME Tuning BEF / JB4 / BM3 / DPs | 10.95 @ 125 1/4 Mile Gone: 2014 335i xDrive | Bootmod3 Stage 2 93 Map | 12.2 @ 113 1/4 Mile |
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09-13-2021, 11:16 AM | #46 |
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09-13-2021, 12:08 PM | #47 |
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Drives: 2008 335i
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2018 M550i - Fellow Canadian
Hi,
I do have a custom tune, with Bootmod3 using Protuning freaks, but the car does not go past 20PSI....Is that why you added JB4? |
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09-13-2021, 12:11 PM | #48 | |
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If you chose one of the maps from bootmod3 maps menu then it's not a custom tune
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2021 M5 Competition | Imola red
2020 Z4 M40i | Misano blue Pure850/PI/LPFP Gone: 2018 M550i xDrive | DME Tuning BEF / JB4 / BM3 / DPs | 10.95 @ 125 1/4 Mile Gone: 2014 335i xDrive | Bootmod3 Stage 2 93 Map | 12.2 @ 113 1/4 Mile |
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09-13-2021, 01:12 PM | #49 | |
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jordan.rktunes@gmail.com |
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09-15-2021, 10:56 AM | #50 |
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Sergey from Protuning Freaks did a custom tune. I might get the Jb4 to ensure boost is maintained. I should be as fast as your car was?
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10-11-2021, 07:59 PM | #51 | |
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Drives: 2019 Bmw M550i
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Spicy
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07-16-2023, 10:52 AM | #52 |
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[QUOTE=Sheharyar_rr;24484864]Hey guys,
Thought i'd update you on my car. Since my last big post i've gotten a DME tuning stage 2 flash. Working with them was flawless, very responsive guys and answer all your questions promptly. On top of the DME flash i had the JB4 installed to control the boost. Running Map 1 currently and this thing rips. It's very cold up here and I was skeptical on the gains at first until i realized this thing is spinning wheels in 2nd and 3rd is kicking the traction light on. Absolute animal Before I get to that i'll give you an update on the gains on Downpipes alone for this car. Sounds quite a bit louder now btw Flash only with and without downpipes What's the need to use the jb4 since you have the tune? Isn't the tune mapping out when max boost is applied and such and that will be over written by the jb4? The DME tune is on the pricey end for flash tune pricing too. |
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07-24-2023, 11:33 PM | #55 |
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Question time.
I’m going to bench unlock and OTS BM3 my June 2020 M550i as the first step in tuning apart from xHP. I assume stage OTS for 93 octane is the correct map to use, but thinking it through, I know some cars from the Uk have secondary cats which mine doesn’t. Therefore is/should there be a difference in the state 1 OTS map for cars with/without secondary cats? Last edited by choppedliver; 07-25-2023 at 04:01 PM.. |
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07-25-2023, 08:26 AM | #56 | |
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There is not a different stage 1 tune for a car with primary cats and a car with primary and secondary cats, it's the same tune. |
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07-26-2023, 04:33 PM | #57 |
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I assume it’s all about managing torque from launch? It’s clear that even in my stock car that there is sufficient torque to spin the wheels in 1st/2nd even on a prepped surface if the trans isn’t reducing it. This was with XHP stage3 drag mode. The car felt like it was skating and I figure if that the torque was managed better, instead of spinning, then 60 foots and times would drop. I do wonder though if it would need to be different for the street vs strip as they have different grip levels.
Last edited by choppedliver; 07-26-2023 at 05:44 PM.. |
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07-26-2023, 04:49 PM | #58 | |
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I tried different things with xhp and in the end all I adjusted was: - start in second gear. - reduced second gear torque from 1200 nm to 800 nm. I have a pretty high horsepower vehicle, so I would never try drag mode. All it is, basically, removes all the torque limiters. As you can see on a stock car you were spinning in drag mode. I would probably blow the trans and transfer case in drag mode. |
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