so i wanna know what kind of hardware do i want and software  to use best for tuning  bmw , Mercedes,  vag group
plus qhat should i learn first before starting  to do anything myself i have the basics knowledge  of cars but what steps or courses should i look for?

i knwo what u mean but some people told me to learn winols first some said just buy a subscription from a company and u will learn with time and saddly nowhere close to me want to take me as a trainee cuz they just enjoy being alone in my local market some people aslo said for me that an mpps is enough some said kess some said ktag and i dont know where to satrt bec the is too many advices and i dont which is better 

i dont have a dyno but there a road close to me long with min. turns and no houses near it nor traffic so i guess it would serve as a good test ground
plus i dont wanna to be like an idiot just flashing files i want to know how to make a custom tune from zero ( i know normally i will not do this but i wanna have knowledge that will make more like a pro) no matter how long it will takes or hard and btw i am still a college student in gas and petrochemical displine so i am a bit short in time and money but i will try my best to reach my goal
sry if i talked too much <3

thanks buddy ❤️

Depends on what country he lives in. EVs might outnumber ICE cars but in many countries (including mine, Greece) the charging infrastructure is simply not there. EVs are not suitable for long trips.

@prj I also need help regarding WinOLS, as I cannot seem to make it work for my ECUs stock map (Marelli IAW5NF.T9, software K34A).

I installed EuropeGas LPG last February and now I want to further tune it regarding timing advance as right now it seems that it has 5% less horsepower at full throttle over 5000 RPM.

On closed loop operation the LPG tuning is perfect and it matches the petrol values (lambda = 1.00 - 1.05).

I don't think my ECU supports map switching. Any ideas?

Read this, and try to fully understand what is going on.
https://easyupload.io/x3umg5

When it comes to getting into car tuning, it's crucial to take a methodical approach. Start by selecting a specific car model or type to focus on. Begin by gathering comprehensive information about the engine control unit (ECU) used in that car. Once you have a solid understanding of how the ECU functions and have a reliable method for logging, flashing, and editing it, you can consider exploring other platforms.

My journey into tuning started with a Saab NG 900SE, and I made my fair share of mistakes, even blowing up the engine a few times due to my initial lack of knowledge. It was only after investing hundreds of hours in research and learning that I could create a tune capable of keeping the engine together. However, I still encountered drivability issues that needed addressing. It took me two years to gain enough experience to create a reasonably tuned setup for DSM 450cc injectors and a hy35 turbo. Another year and a half was spent fine-tuning the setup.

All of this happened 15 years ago, and my main message is that car tuning is not something you can learn overnight. Focus on mastering the basics and be prepared to dedicate all your free time to scouring the internet, even delving into decade-old forum threads. Information is more accessible than ever, but you'll still need to put in the effort. Don't hesitate to take notes; my desk is a testament to that! Retaining all this information is a challenge, but knowing where to reference it is essential. I hope this insight adds a layer of clarity to your goals. Best of luck on your tuning journey!