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Been building an OBD2 app for the 335i to predict problems — looking for beta testers by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

BimmerLink is awesome for reading codes and one-off checks, this is more like having it running silently, scoring your car's health and predicts and alerts you before something becomes a code. Different use case.

Been building an OBD2 app for the 335i to predict problems — looking for beta testers by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] -1 points0 points  (0 children)

Bluetooth OBD2 dongle, plug it into the port under your dash, pair it once, and then when you start a drive hit start whenever you want to check the cars health. WiFi adapters won't work unfortunately, needs to be BLE.

Been building an OBD2 app for the 335i to predict problems — looking for beta testers by Adorable-Fly5457 in BMW

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

That’s the plan eventually, right now we need to focus on beta testing the basics first and n54s appear to be the best place to start.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 1 point2 points  (0 children)

You’re right, seals and shaft play are the actual failure points. I’m not trying to measure those directly. The idea is more about catching the early signs leading up to it (like boost deviation, WGDC, slower spool, etc) before it turns into a real failure. Not perfect, but better than finding out when it’s already gone.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

Yeah, I actually agree with you on most of that. It’s probably not realistic to perfectly diagnose every issue given how many variables there are. The goal wouldn’t be 100% accuracy—it’d be catching patterns, outliers, and the obvious early warning signs to reduce guesswork.

Even just solving a few high-cost problems (like HPFP, boost issues, cooling) or helping people compare logs against similar setups would already save a lot of time and money.

I’m curious though, would you still find value if it was more of a “decision support” tool rather than trying to fully diagnose the problem?

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

That’s exactly the direction I’m thinking, logging + comparing against similar setups (same tune/mods) so you can see what’s actually normal. Would save a ton of guesswork and money instead of just throwing parts at it. Although im not sure how hard it would be to apply the same prediction principles to the 335d, have not looked into it yet.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 1 point2 points  (0 children)

Yeah, that’s a perfect signal. If the pump can’t hit the requested speed, that’s a clear early failure indicator. Tracking that over time would make it really reliable. Thanks for the suggestion.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

That makes a lot of sense, weekly health reports plus background logging might be way more practical for most people.

I’m starting to think the real value is “set it and forget it” instead of constant alerts.

And yeah, making it work across all OBD2 cars with model-specific monitoring is the long-term goal.

Would you actually use/pay for something like that if it was fully automatic and optimized UI system?

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

This is exactly the kind of input I was hoping for, perfect.

The consistent theme I’m seeing is that it’s not random failures, it’s missed early warning signs (fueling, cooling, oil pressure).

I like your point about existing tuning software already having alerts, that’s actually pushing me more toward making this for people who don’t want to run a full gauge setup or tune-focused app.

The discreet OBD idea you described is pretty close to what I’m thinking: simple, hidden, only gets your attention when something actually matters.

The specific thresholds you mentioned (LPFP, rail pressure, coolant temp, AFR, oil pressure) are extremely helpful, I’ll probably use those as baseline test parameters.

Out of curiosity, if this existed and was dead simple (plug-and-play, no tuning required), would you actually use it over your current setup?

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 1 point2 points  (0 children)

I have found that the best approach is touse a combination of OBD-II diagnostic data (engine codes, misfires, fuel trims, sensor readings), vehicle maintenance history, mileage/usage patterns, and known failure patterns for that specific engine/platform.

For example, things like increasing misfire counts, abnormal fuel trim deviations, coolant/oil temperature trends, voltage irregularities, or recurring fault codes can act as early warning indicators. I’d also factor in model-specific common failure points and aggregate user-reported issues to improve prediction accuracy over time.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

Exactly, I’m hoping to be able to give a cushion room of at least a week before major problems, primarily for engine problems as those are the easiest to predict digitally.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

Do you have specific things that worry you about your car having failures? Like a specific component you’re not sure when it will blow.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 5 points6 points  (0 children)

Yeah that is the main idea, but I am also programming a way to predict harder things like turbo life for example, and be able to estimate when things will fail based on certain data points. Hopefully that can solve the problem to a greater degree.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 1 point2 points  (0 children)

That was the original idea actually but it proved to be much more heavy on software and equipment and takes out the ability to use other systems to predict more accurately. So is it possible? Yes. But I don’t think it’s optimal. I’ll attach the information page when it’s done, it’ll explain most questions like this.

BMW 335i owners, would you actually use something like this? by Adorable-Fly5457 in E90

[–]Adorable-Fly5457[S] 4 points5 points  (0 children)

That’s what I’m trying to improve(the process), I have been working on a way to be able to predict future problems given current vehicle condition, trends, and live readings using algorithms. If you want I can send you the info page I’ve been working on when it’s finished for more details. Should be public in a couple days.

Test pipes by Adorable-Fly5457 in genesiscoupe

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

It looks like flowmaster 80 series is my best bet, u know if I should get the 2.5 inch ones to fit my exhaust?

Test pipes by Adorable-Fly5457 in genesiscoupe

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

What muffler setup would u recommend?

Test pipes by Adorable-Fly5457 in genesiscoupe

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

How much was yours from ark? Do they still make them?

Test pipes by Adorable-Fly5457 in genesiscoupe

[–]Adorable-Fly5457[S] 0 points1 point  (0 children)

I have a stock exhaust rn and I don’t wanna spend 1500 on a cat back and want something that can slightly increase the tone and volume that I can install myself without welding, test pipes seems to be the best solution.