BM3 Stage 2 ACN91 tune hpfp drop

kianf22 · 02-27-2021, 07:40 PM

Hello! I'm running the BM3 stage 2 acn91 OTS map and am having an issue with my hpfp dropping. (Stock gen1 not upgraded) It drops waaay below target. Anyone else running this ots map and have this problem? I ran 3 logs and the hpfp drop was present in all 3 of them. Timing is also low as I've been told. Submitted a ticket with PTF already.

BM3 Stage 2 91 ACN OTS

Fresh tank of shell v-power 91 (California)

Log starts at 4th gear 2k rpm, wot to redline and including a shift.

Remus catback
AA catted dp
XHP stage 3
AP intake
Factory equipped sparked plugs with just under 11k mi on them

Logs:

-link removed, pm if you need it-
*picture removed*

Any input is greatly appreciated!

kianf22 · 02-28-2021, 01:36 AM

The hpfp drops are not present on stock tune, which makes me lean more toward it being a problem with the ots map.

-link removed, pm if you need it-

kianf22 · 02-28-2021, 05:59 PM

https://www.bimmerpost.com/forums/sh...php?p=26856272

I've found at least one other person with this map having the same issue.. wonder if there's more out there and if this is a problem with the ots map or I'm just simply reaching the limits of the stock hpfp on a stage 2 ots map. Really don't think this is just bad gas.

kianf22 · 03-03-2021, 04:52 PM

Update, working with Halim at PTF.

He sent a new map and I logged and sent it back and hpfp seems to hold a lot better. Only dips about 200-300psi whereas before it would dip from 2800 target to 1600psi actual.

Would recommend anyone running the 91acn ots stage 2 map, or any ots map honestly, to log your car and make sure everything is fine, especially rail pressure. Just because it's an OTS map doesn't mean it's best for YOUR CAR and sometimes adjustments are necessary, especially on crap california 91 octane.

Asked him what he changed since I'm eager to learn more about this and he said, "What I did was to basically reduce torque in the midrange and ignition timing overall to prevent knock. Moreover, I went richer too on AFR. These cars stock run AFR of 14.7 until exhast gas temperature (EGT) goes high, then they go very rich in AFR."

Here are some logs from the new map that could be helpful to anyone with the same problem:

https://www.bootmod3.net/log?id=603f...0b432a2b836524

https://www.bootmod3.net/log?id=603f...729b5994d9e002

Basic.B58 · 10-17-2021, 12:27 AM

I just had this issue with my car, stage 2 ACN91. Lost a few races I should've won and decided to log to determine the problem.

https://www.bootmod3.net/log?id=616b...729b197d4d5bfc
https://www.bootmod3.net/log?id=616b...90c6706e982b65

Did you just reach out via the support portal and request help?

kianf22 · 10-20-2021, 12:02 PM

Quote:

Originally Posted by TCaver

I just had this issue with my car, stage 2 ACN91. Lost a few races I should've won and decided to log to determine the problem.

https://www.bootmod3.net/log?id=616b...729b197d4d5bfc
https://www.bootmod3.net/log?id=616b...90c6706e982b65

Did you just reach out via the support portal and request help?

Yep!

02-27-2021, 07:40 PM	#1
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	BM3 Stage 2 ACN91 tune hpfp drop Hello! I'm running the BM3 stage 2 acn91 OTS map and am having an issue with my hpfp dropping. (Stock gen1 not upgraded) It drops waaay below target. Anyone else running this ots map and have this problem? I ran 3 logs and the hpfp drop was present in all 3 of them. Timing is also low as I've been told. Submitted a ticket with PTF already. BM3 Stage 2 91 ACN OTS Fresh tank of shell v-power 91 (California) Log starts at 4th gear 2k rpm, wot to redline and including a shift. Remus catback AA catted dp XHP stage 3 AP intake Factory equipped sparked plugs with just under 11k mi on them Logs: -link removed, pm if you need it- picture removed Any input is greatly appreciated! __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \| Last edited by kianf22; 12-22-2023 at 04:54 AM..
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02-28-2021, 01:36 AM	#2
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	The hpfp drops are not present on stock tune, which makes me lean more toward it being a problem with the ots map. -link removed, pm if you need it- __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \| Last edited by kianf22; 12-22-2023 at 04:52 AM..
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02-28-2021, 05:59 PM	#3
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	https://www.bimmerpost.com/forums/sh...php?p=26856272 I've found at least one other person with this map having the same issue.. wonder if there's more out there and if this is a problem with the ots map or I'm just simply reaching the limits of the stock hpfp on a stage 2 ots map. Really don't think this is just bad gas. __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \|
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03-03-2021, 04:52 PM	#4
kianf22 First Lieutenant 64 Rep 348 Posts Drives: 2020 BMW M240i Join Date: Jul 2019 Location: Southern California iTrader: (1)	Update, working with Halim at PTF. He sent a new map and I logged and sent it back and hpfp seems to hold a lot better. Only dips about 200-300psi whereas before it would dip from 2800 target to 1600psi actual. Would recommend anyone running the 91acn ots stage 2 map, or any ots map honestly, to log your car and make sure everything is fine, especially rail pressure. Just because it's an OTS map doesn't mean it's best for YOUR CAR and sometimes adjustments are necessary, especially on crap california 91 octane. Asked him what he changed since I'm eager to learn more about this and he said, "What I did was to basically reduce torque in the midrange and ignition timing overall to prevent knock. Moreover, I went richer too on AFR. These cars stock run AFR of 14.7 until exhast gas temperature (EGT) goes high, then they go very rich in AFR." Here are some logs from the new map that could be helpful to anyone with the same problem: https://www.bootmod3.net/log?id=603f...0b432a2b836524 https://www.bootmod3.net/log?id=603f...729b5994d9e002 __________________ Pure800 - DS2 HPFP - Nostrum S1 - ER Catless DP - Remus Non-Resonated Catback - BM3 Flex Fuel Kit - Ross V1 VTA PCV - Custom Tunes on MHD/BM3 - xHP Stage 3 - TCKline SA/DA Coils - Apex ARC8s - Vicrez Carbon Fiber CSL Trunk - ALP Laser System - Escort Max 360c with Blendmount + more... \| IG: kianf22 \|
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10-17-2021, 12:27 AM	#5
Basic.B58 New Member 8 Rep 11 Posts Drives: 2018 BMW 340i M-Sport Join Date: Jan 2021 Location: Bay Area, CA iTrader: (0)	I just had this issue with my car, stage 2 ACN91. Lost a few races I should've won and decided to log to determine the problem. https://www.bootmod3.net/log?id=616b...729b197d4d5bfc https://www.bootmod3.net/log?id=616b...90c6706e982b65 Did you just reach out via the support portal and request help?
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