10-22-2018, 12:46 PM | #23 |
Lieutenant
255
Rep 494
Posts |
Update ...
As expected the guys at MHD replied promptly this morning, and as expected, they were super professional and eager to help. They confirmed the 317whp number is lower then expected, and that the dyno gains they've seen on customer EWG cars with the stage 1 is closer to 70whp. This should put me somewhere in the mid-340s using my VD methodology. They also confirmed that you can use the base S2 tune with just an FMIC, and that S2 is more analogous to the n54 S1+ tune.
I sent MHD all my data, and am going to wait until they have a chance to review, and see if they want me to do any further testing. I'm most likely going to go to S2, but will wait until MHD directs me to do so. More to come, I'm sure.
__________________
2016 F80 M3 (Mineral/Full SO)
2014 X5 M Sport (Mineral/Mocha) |
Appreciate
1
Seba77W401.00 |
10-22-2018, 02:39 PM | #24 |
Major General
5538
Rep 5,364
Posts |
The only time I've seen EWG N55 dynos that have this sort of powerband shape are those N55's run in really hot/heat soaking temps and/or some issue that is cutting timing. Power should and climb and peak at ~6,000-6,200 rpm on EWG N55. You're right too, power should be in the ~340whp range. There's something going on that's killing power from 5,300-6,500rpms. Everything else looks pretty normal.
I see that the shop corrected to SAE. Most tuners correct to STD for power bragging rights. STD will get you ~5% higher numbers so corrected to STD you're looking at ~330whp/365wtq if that makes you feel better As for comparing N54 vs N55 boost numbers, remember, the N54 uses tiny turbos vs the much bigger twin scroll on the N55. Point being, psi numbers between the N54 and N55 cannot be compared. It's apples to oranges. Was your N54 car dynoed at the same shop? What did they correct the numbers too? STD or SAE? It all makes a big difference. Most every Dynojet I've seen for the M2 shows 330whp and 350wtq in stock form. That's pretty consistent across the board.
__________________
The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
Last edited by XutvJet; 10-22-2018 at 02:47 PM.. |
Appreciate
0
|
10-22-2018, 05:04 PM | #25 | |
Lieutenant
255
Rep 494
Posts |
Quote:
Yeah, I'm aware of the differences between SAE and STD, I like to use SAE 5 because it's what the shop uses. They did all the pulls on my previous n54 135i, this f30, and my s65 m3. They know their stuff, all they do is BMW, and they are the best BMW performance shop in the area. They were kind enough to let me look at various n55 EWG pulls, and after some discussion with them, we agreed there is much more upside to be had on my car. Your observation about the power curve is interesting, and prompted me to have a closer look at the logs. The car appears to be exceeding boost target @ ~5k, and there appears to be some throttle closure to get the boost back under target. This coincides with the power curve. Perhaps this is normal, perhaps not, I'll wait to hear what MHD has to say. I most definitely understand the differences between N54 and N55 EWG motors (I've owned both and have worked on both extensively), but respectfully, psi is psi :-). They are different motors, but they are not Chevy V8 and Mazda 2L different. They are both 3L I6 BMW engines that make pretty much the same power from the factory using pretty much the same boost in stock form. Both are capable of similar peak boost numbers on the stock turbos, both tail off at higher rpm. My N54 had an FMIC, this car does not, at least not yet. My IATs are staying under 100*, so it's not a limiting factor at this point. The n54 is ultimately more tune-able, but it's not my goal to max out the platform. Regardless, I will let MHD do their thing and see where this goes. I will report back with more information once I get it, unless of course, I keep getting called names and ridiculed, at which point I'll just delete all the information I've posted thus far and move on.
__________________
2016 F80 M3 (Mineral/Full SO)
2014 X5 M Sport (Mineral/Mocha) Last edited by TheBreeze; 10-22-2018 at 05:24 PM.. |
|
Appreciate
0
|
10-22-2018, 05:46 PM | #26 |
Lieutenant Colonel
595
Rep 1,693
Posts |
|
Appreciate
0
|
10-22-2018, 07:36 PM | #27 |
Private First Class
39
Rep 123
Posts |
Did you see that in the stock runs as well? Seems weird how throttle just back off
|
Appreciate
0
|
10-22-2018, 08:57 PM | #28 |
Major
559
Rep 1,127
Posts |
An EWG N55 will do ~270/270 on that dyno stock. I had my car dyno'd there stock. Keep an eye out for a Blue 335i around Cary, NC
Last edited by zinner; 10-22-2018 at 09:25 PM.. |
Appreciate
0
|
10-22-2018, 11:19 PM | #29 | |
Captain
310
Rep 716
Posts |
Quote:
|
|
Appreciate
0
|
10-23-2018, 07:35 AM | #30 | |
Lieutenant
255
Rep 494
Posts |
Quote:
Update: MHD got back to me and said the logs look clean, but boost is a bit lower than expected. They advised me to flash S2 and report back. Flashed S2 map, and it was actually a bit worse in terms of boost performance. A lot of head scratching going on. Here's the S2 logs (didn't have time to trim the logs before uploading): https://datazap.me/u/thebreeze/f30-m...=0&data=3-4-13
__________________
2016 F80 M3 (Mineral/Full SO)
2014 X5 M Sport (Mineral/Mocha) |
|
Appreciate
0
|
10-23-2018, 07:37 AM | #31 |
Lieutenant
255
Rep 494
Posts |
We must be neighbors :-). I live over by High House and 55.
__________________
2016 F80 M3 (Mineral/Full SO)
2014 X5 M Sport (Mineral/Mocha) |
Appreciate
0
|
10-23-2018, 09:24 AM | #33 |
Captain
1171
Rep 969
Posts |
Numbers aren't terrible, but definitely lower then they should be. I reviewed the datalog. The log doesn't look awful... timing is nice and consistent, but boost is low. EWG can handle 14-15 psi up top. You're well below that. MHD must just tune more conservative.
__________________
|
Appreciate
0
|
10-23-2018, 10:58 AM | #34 |
Lieutenant Colonel
1106
Rep 1,499
Posts |
Hi neighbors. I'm in Raleigh and work in Morrisville. We should do a bimmerpost lunch one day.
__________________
2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids |
Appreciate
0
|
10-23-2018, 03:08 PM | #35 |
Lieutenant
255
Rep 494
Posts |
|
Appreciate
0
|
10-24-2018, 07:44 AM | #36 |
Lieutenant Colonel
1106
Rep 1,499
Posts |
Nice. I’ll be up the Nov 30 for charity laps. Meeting some othe car guys in Durham that morning to cruise on up the VIR. Shoot me a message if interested.
|
Appreciate
0
|
10-24-2018, 11:35 AM | #37 | |
Lieutenant Colonel
521
Rep 1,288
Posts
Drives: 2015 335i xdrive Msport Mbrake
Join Date: Dec 2017
Location: Middle of the Road
|
Quote:
|
|
Appreciate
1
Obi-Wan12.50 |
10-24-2018, 04:11 PM | #38 | ||
Lieutenant
401
Rep 544
Posts |
Quote:
__________________
2014 435i xDrive M-Sport, Fabspeed cat, Active Autowerke axle back, CTS Turbo intake, ER charge pipe, ER Competition Intercooler, MHD Tuning Stage 2+
|
||
Appreciate
0
|
10-24-2018, 04:31 PM | #39 | |
Lieutenant Colonel
521
Rep 1,288
Posts
Drives: 2015 335i xdrive Msport Mbrake
Join Date: Dec 2017
Location: Middle of the Road
|
Quote:
waiver: This was all done on a closed course with professionals and only simulated actual for seen experiences... Do Not attempt this at home etc... Last edited by FastF30; 10-24-2018 at 04:50 PM.. |
|
Appreciate
0
|
10-24-2018, 09:52 PM | #40 |
Colonel
3179
Rep 2,577
Posts |
I'll just chime in with below three points:
1) SAE and STD difference is 3%, or roughly 10whp. Not 5%. 2) N54/S55 and N55 CAN be compared. Boost is the measurement of the flow restriction at manifold, or sometimes pre-throttle. Combined with IAT, it effectively means air mass for a given charging system. Twin or single turbo is the technology to make boost. But boost is boost downstream of turbo. 17psi means the same either from single or twin turbo. Keep in mind, the power out of the same boost can also be dictated by back pressure, that's another topic though. 3) OP you just need to adjust your expectation. From my experience, on pump gas, different N55 EWG variants makes quite different result. 135/235 will always make NOTICEABLY more than 335/435/535, everything else being equal. Again, ON PUMP GAS. But with octane improved, that difference will be neutralized.
__________________
Lemania 2320
|
Appreciate
1
TheBreeze254.50 |
10-25-2018, 12:43 AM | #41 | |
Lieutenant
249
Rep 501
Posts |
Thanks for the reasonable input. Any thoughts why 135/235 (N55B30O0) give more power using same octane than 335/435 (N55B30M0)?
Quote:
|
|
Appreciate
0
|
10-25-2018, 09:43 AM | #42 |
Lieutenant
255
Rep 494
Posts |
Thanks for your insight. I've been in communication with MHD, they've acknowledged there is something odd going on, and have let me know they are preparing a new map for me to test. Stay tuned.
__________________
2016 F80 M3 (Mineral/Full SO)
2014 X5 M Sport (Mineral/Mocha) |
Appreciate
1
zinner559.00 |
10-27-2018, 08:47 PM | #43 |
Banned
2465
Rep 9,004
Posts |
Why not run the stock M2 Map? This tune seems...suboptimal.
|
Appreciate
1
JuiceQuadre54.00 |
Post Reply |
Bookmarks |
|
|