|
|
|
2010 2011 BMW 5 Series Forum F10 Upgrade your turbo inlet pipe for under $100 |
|
Post Reply |
|
Thread Tools | Search this Thread |
01-13-2022, 11:42 PM | #23 |
Private First Class
18
Rep 104
Posts |
Great mod anyways and Congrats on your newborn! I will try this inlet mod to see what it will do for me. Thanks for sharing this post
|
Appreciate
0
|
01-13-2022, 11:45 PM | #24 |
Private First Class
18
Rep 104
Posts |
Can you show what it makes from 6K RPM? I can't make more than 20 psi after 6K. I can hit 26 psi around 3800-5500 and it starts to taper off after that.
|
Appreciate
0
|
01-14-2022, 12:12 AM | #26 |
First Lieutenant
114
Rep 305
Posts |
|
Appreciate
0
|
01-14-2022, 12:19 AM | #27 |
Private First Class
18
Rep 104
Posts |
|
Appreciate
0
|
01-14-2022, 10:11 AM | #28 | |
Major
513
Rep 1,442
Posts
Drives: 2011 535i 6MT
Join Date: Apr 2019
Location: Chattanooga
|
Quote:
I am dragging my feet on it cause I don't like the 'home made' look of it so I am considering getting some prototypes done and getting them manufactured off shore which would bring the price down quite a bit. You can hear it here: And this is what it looks like out of the car: If you go through my posts there are drive by's with it as well. |
|
Appreciate
0
|
01-16-2022, 04:36 PM | #29 |
Major
513
Rep 1,442
Posts
Drives: 2011 535i 6MT
Join Date: Apr 2019
Location: Chattanooga
|
I got snow here right now but as soon as I can I'll get you some logs. We are still working on the tune.
|
Appreciate
0
|
01-20-2022, 11:48 PM | #30 |
Private First Class
18
Rep 104
Posts |
|
Appreciate
0
|
04-21-2022, 11:01 AM | #31 | |
Colonel
1300
Rep 2,590
Posts |
Quote:
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
|
Appreciate
0
|
04-21-2022, 11:03 AM | #32 | ||
Major
513
Rep 1,442
Posts
Drives: 2011 535i 6MT
Join Date: Apr 2019
Location: Chattanooga
|
Quote:
|
||
Appreciate
0
|
04-21-2022, 11:11 AM | #33 |
Colonel
1300
Rep 2,590
Posts |
Right but that's my question. Top ramen is only on stage 1, yet their datalog shows a target of 30psi with the upgraded inlet
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
Appreciate
0
|
04-21-2022, 11:41 AM | #34 | |
Major
513
Rep 1,442
Posts
Drives: 2011 535i 6MT
Join Date: Apr 2019
Location: Chattanooga
|
Quote:
Hardware will never change target boost! |
|
Appreciate
0
|
04-21-2022, 12:21 PM | #35 |
Colonel
1300
Rep 2,590
Posts |
It's a newer version of a stage 1 tune, but it's still stage 1. That's what I'm wondering: stage 1 tunes will never set a boost target of 30psi. So unless the tune is broken and is requesting a dangerous level of boost, something is up with that log.
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
Appreciate
0
|
04-21-2022, 01:05 PM | #36 |
Major
513
Rep 1,442
Posts
Drives: 2011 535i 6MT
Join Date: Apr 2019
Location: Chattanooga
|
If stage one is targeting 30 PSI I'd kick BM3 in a split second. That is lazy tuning... It's not "dangerous" because your stock turbo won't make it and other safeties would kick in before it'd blow your motor but WOW. That's crap if that's an OTS tune, what garbage. I'll ask my tuner if that even makes sense that that could be an OTS.
|
Appreciate
0
|
04-21-2022, 02:08 PM | #37 | |
Colonel
1300
Rep 2,590
Posts |
Quote:
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
|
Appreciate
0
|
08-18-2022, 12:31 AM | #38 |
Colonel
1300
Rep 2,590
Posts |
Was able to use this turbo inlet + some other bits and pieces (and some 3D printing) to do up my MST-like intake. Cost about 300 bucks total, but it's a full intake + inlet pipe upgrade, so pretty good value imo
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
Appreciate
0
|
08-18-2022, 08:50 PM | #39 | |
Private
23
Rep 53
Posts |
Quote:
The standard tuning strategy in the DME is load/torque based. Your throttle input isn't the traditional correlation to throttle blade angle and air intake or flow into the engine. Your throttle input equals a desired torque request (in NM) of the engine. Ex. 40% throttle at 3500rpm = 250NM of desired engine output. From there the DME does whatever it takes to produce 250NM of engine output. That can include: increasing boost, timing, throttle angle, fuel, etc. There's a whole process flow the DME goes through in order to produce the "requested" torque output. The theory behind this is to ensure that no matter what climate, region, elevation or any other factor the engine output always matches or is as close as can be to the requested torque. As you can imagine the tuning strategy is complex and can involve tuning many tables in order to do something as simple as increasing boost. It can take a lot of time to develop a tune and you can end up fighting the DME to increase power output as something in that process flow might not be happy about you trying to increase engine output. A lot of this goes back to reverse engineering BMW's code on the DME to understand exactly how it all comes together. Some tuners are more familiar with it and embrace this strategy, while others may feel like it's unnecessarily complex and can be simplified. One method of simplification is leveraging the "commanded duty cycle" boost control model in the DME. This method of boost control is available in the DME but unused by BMW. By default BMW uses a PID Boost control strategy. You can google the concept but simply it's more complex than a "standard" boost control model and has a feedback loop built in. With PID it can take a lot of time to get the boost control smooth or even get it to do what you want it to do. This is where "commanded duty cycle" comes into play. As the name would suggest, it allows you to command a specific wastegate duty cycle. It's basically a table that will override the default boost control model (PID) and say at "this" rpm and "this" engine load, request "this" wastegate duty cycle. No feedback, nothing fancy just, "DME make sure you hit this wastegate duty cycle". That whole novel to say, I'm pretty sure Bootmod3 is leveraging the commanded wastegate duty cycle model for their PWG tunes lol. If you look at both datalogs you'll see roughly the same duty cycle is being achieved before and after. You've now removed a significant air restriction for the turbo, taking less effort to spin the turbo and less wastegate duty cycle to achieve the same desired boost output. If the feedback loop was in place the DME would realize it doesn't require as much duty cycle to achieve the same boost level, reduce the wastegate duty cycle and reduce boost. I believe the "boost target" value doesn't really mean anything in this scenario since the standard boost control model has been thrown out the window. The target is likely just going to align with the actual. Also keep it mind all the "safeties/limits" have likely all been raised significantly. So, boost cut is probably maxed out to the limit of the MAP sensor, allowable torque output is probably raised to something high like 1000NM, etc... This is why there hasn't been any intervention by the DME with you achieving that much boost. It's simply doing what it's been told to do, which is hit the same wastegate duty cycle every time. Some may argue this is "bad" tuning but I think it comes down to perspective. The Stage 1 and Stage 2 maps are very much one size fits all and in most cases everyone's car is copy and paste in terms of mods (intercooler, downpipe, maybe intake). So 9 out of 10 times, you won't have an issue. You need to be careful when you introduce new variables that may not have been accounted for in the original development of the tune. Again, this is me taking a pretty big guess as to what's going on so take what's been said with a grain of salt lol. As I side note, I've have used both MHD and Bootmod3 on my car. I've done logging with both and reviewed a ton of logs and from what I've seen I'm pretty sure Bootmod3 is using commanded duty cycle. I also believe MHD is still using the standard PID boost control model, which is why I think a lot people say MHD PWG maps tend to be "smoother" in terms of power delivery. Last edited by MatthewLC; 08-18-2022 at 08:56 PM.. |
|
Appreciate
0
|
08-18-2022, 11:20 PM | #40 | |
Colonel
1300
Rep 2,590
Posts |
Quote:
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
|
Appreciate
0
|
08-18-2022, 11:39 PM | #41 | ||
Private
23
Rep 53
Posts |
Quote:
I haven't explored much in EWG tuning but from what I've seen online, it seems a lot quicker to dial in the boost control. I believe since the DME has full control over the wastegate it's easier to set a desired boost level and the dme will do what it needs to do with the wastegate position to achieve the desired boost target. |
||
Appreciate
0
|
08-19-2022, 10:56 AM | #42 |
Private
23
Rep 53
Posts |
I was curious, so I pulled up a stock EWG tune. Looks like commanded wastegate is possible for EWG as well. No idea if this strategy is being used on the OTS maps.
|
Appreciate
0
|
11-23-2022, 01:13 PM | #43 |
Second Lieutenant
23
Rep 214
Posts |
Anyone lntrested to listen to the story. Have a look. 🤣🤣🤣🤣
https://photos.app.goo.gl/frvA6wwWa8xwMqZw5 30 minus ambient pressure equals 15. 🤣 |
Appreciate
0
|
02-21-2023, 10:14 AM | #44 |
Colonel
1300
Rep 2,590
Posts |
For anyone looking for other inlet options for 100% custom intakes - I THINK E series N55's had the same intake setup, and so any inlet for them should fit our cars. If it does fit, the E series ones are BETTER for custom intakes since it terminates at a straight, rather than the weird kink found on our cars, allowing you to use a simple 45 or 90 elbow to the filter. This is a theory and is untested, so YMMV
__________________
2015 BMW 535xi
Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial Last edited by Unspec; 02-21-2023 at 10:26 AM.. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|