06-10-2022, 12:00 PM | #23 | |
Brigadier General
2814
Rep 3,696
Posts |
Quote:
Altho, the trade off is a car in the wall if you’re not sure of its limits, or make a mistake. |
|
Appreciate
0
|
06-10-2022, 12:15 PM | #24 |
Private
57
Rep 52
Posts |
Yep! I put it in Sport+ for a lap to help it cool off but next time out I'll probably be in DSC OFF and try out "Max Cool Mode" in BM3. According to PTF it targets 10C cooler coolant temps.
__________________
Cary Jordan 91 Oct Tune~ CSF FMIC, DCT Cooler~ VRSF Chargepipe~ MST Turbo Inlet Pipe~ Fabspeed Sportcat Downpipe~ Turbosmart BV~ Ohlins R&T~ do88 Oil Cooler, Radiator, Remote Radiator~ Girodisc Rotors
|
Appreciate
0
|
06-10-2022, 12:41 PM | #26 |
Captain
829
Rep 647
Posts |
Have you flashed the M2 CS steering/differential/MDM updates?
The steering in Sport+ is noticeably improved and not nearly as heavy. I highly recommend all three updates. Also, I understand it’s possible to tailor throttle sensitivity via BM3 now so you may want to explore that as well. Together these tweaks may allow you to utilize Sport+ instead of Traction as intended. |
Appreciate
1
grinchmas56.50 |
06-10-2022, 12:58 PM | #27 | |
Brigadier General
2814
Rep 3,696
Posts |
Quote:
Hadn’t thought about the throttle sensitivity settings in BM3. Altho, I do like using Sport+ the way it is around town just for fun. |
|
Appreciate
0
|
07-10-2022, 10:50 AM | #29 |
Second Lieutenant
120
Rep 217
Posts |
FYI this is the Active Autowerke (AA) track tune I mentioned previously with a description of their tuning process:
https://store.activeautowerke.com/pr...oftware-tuning Our M2 has seen dozens of track days and after extensive R&D we've settled on a final tune that we believe will produce the most consistent and reliable power lap after lap without falling off or causing any drivetrain malfunctions. Being in Miami, we see some of the hottest and most humid temps in the country! Approaching the 400whp mark has caused fueling issues with the stock fuel system and adding any more torque down low will cause power levels to drop up top when temps rise. We've been able to extract ~415 lb/ft of torque and ~378whp lap after lap without any problems. When we bumped up the torque to ~430 lb/ft the car would make inconsistent power at higher RPMs due to varied ignition timing and throttle opening. Increasing the power to 400whp led to drivetrain malfunctions caused by lowered fuel pressure. Our ECU reflash corrects the leaner stock AFR ratio allowing us to increase boost safely and reliably. We lower the AFR sooner and more significantly compared to the stock curve to promote consistent power lap after lap. Piggyback units do not modify the AFR and thus have not proven to provide consistent performance during extended use. I doubt I'll have the opportunity to test my AA-tuned M2 in conditions as extreme as grinchmas. The worst I'd expect here in the southeast is mid-90's with 80% humidity.
__________________
2017 F87 M2: MGM, 6MT, AA Tune, Eibach Pro-Kit, Fabspeed Catted Downpipe, Evolution Racewerks FMIC+Chargepipe, Autosolutions SSK, CDV Delete, Vorshlag Plates, PFC-08 pads, Apex EC-7 18x9.5"
2013 E92 328i M-Sport: BSM, 6MT, 3IM+AA Tune, BMW PE, M3 control arms, Eibach Pro-Kit, Bilstein B8, BMW SSK, CDV Delete, Apex EC-7 18x9" |
Appreciate
0
|
07-12-2022, 02:26 PM | #31 |
Second Lieutenant
130
Rep 221
Posts |
@ZM2 I noticed we're both east coast residents and track our OG cars.
I have yet to experience some of the issues you're seeing with overheating. How long could you usually go before experiencing limp modes? Worth mentioning I'm all stock aside from a catless downpipe and intercooler. Stock software |
Appreciate
0
|
07-12-2022, 03:06 PM | #32 | |
Brigadier General
2814
Rep 3,696
Posts |
Quote:
Altho, a little bit of race gas helps on hot days to keep the car from pulling power when IATs > 110F (easy to hit when ambient is >90F). Most stock power people don’t feel the power being pulled on hot days, but it’s easy to see in morning/afternoon data overlays. Engine cooling only becomes an issue when you start adding power (boost & timing) via a tune. |
|
Appreciate
1
3LiterBeater130.00 |
07-12-2022, 03:49 PM | #33 | ||
Brigadier General
3989
Rep 3,409
Posts |
Quote:
__________________
Not a Doctor, those are just my initials.
|
||
Appreciate
1
OG Shark4692.50 |
07-12-2022, 04:50 PM | #34 | |
Brigadier General
2814
Rep 3,696
Posts |
Quote:
I only ever ran 200tw tires when my car was stock and didn’t have any issues, while running some pretty quick times on the tracks out here. Altho, we’re not at altitude, which impacts cooling. |
|
Appreciate
1
DRLane3988.50 |
07-12-2022, 07:24 PM | #35 |
BimmerPost Supporting Vendor
4693
Rep 2,542
Posts |
I have on both the OG & comp. Stock OG gave it up fairly easy but the stock comp had to flog it pretty hard to get there. Definitely situationally dependent though. Track characteristics, weather, driving manner, etc all that fun stuff make a big difference. My two local tracks - one you could drive all day without cooling issues and the other be running a cooldown lap two laps in.
|
Appreciate
0
|
07-12-2022, 07:41 PM | #36 | ||
Second Lieutenant
130
Rep 221
Posts |
Quote:
I'm not sure what the others have seen but I've gone 20-30 mins even with a passenger at times that are well within our "leaderboard" with no issues. I think the others are in hotter climates, however. |
||
Appreciate
0
|
07-12-2022, 08:07 PM | #37 | ||
Brigadier General
3989
Rep 3,409
Posts |
Quote:
Sadly, my car is SC e9x and doesn't tolerate the heat anywhere near as well as the f8x (even with like power).
__________________
Not a Doctor, those are just my initials.
|
||
Appreciate
0
|
07-12-2022, 08:29 PM | #38 | |
Brigadier General
2814
Rep 3,696
Posts |
Quote:
I mean, I could hit 245F coolant on my OG when it was stock and running 200tw tires, but it would simply pull a little power to keep temps in check. No limp mode. My quickest stable setup in the summer so far is Stg 2 E30 (415-420whp) with 265/295 R7’s. Whether it’s an OG or M2C the kind of power I’m running now (480whp/540wftlbs) requires full cooling upgrades on track, so no real cost savings for the S55. However, you can get a little more power a little longer on track with it. Altho, I’ve taken an S55 with less power than mine to cooling limp. Will see how my latest setup does soon, but won’t be trading less low end torque and worse sound from the S55 for it. Last edited by ZM2; 07-13-2022 at 07:50 AM.. |
|
Appreciate
1
DRLane3988.50 |
Post Reply |
Bookmarks |
|
|