After getting used to driving M5, I am having troubles with my 2016/17 -740i with a B58 engine
I asked fellow members iliketurtles and dealer about BM3 and they replied in very detail. Thought of sharing their views here for the benefit of others and also to get an answer to some of my further queries. Many thanks to both for taking out time and answering.
On further pondering, I feel, the major drawback on the 740i is currently the lazy transmission (relatively) Am sure, it's far more aggressively done on some of the other models like M340i, so I want to first do a change to the transmission and then play with the engine. What will be recommendations?
Member - iliketurtles
Hiya Turbanator.
I’d definitely recommend going for it for the flexibility it offers. You can do it entirely yourself (purchase and flashing). If a dumbass like me can do it, anyone can.
I paid about $500 USD for it (in a Black Friday sale) for the bundle that includes all the maps they have on offer. That’s the route I’d recommend you take.
I initially ran a Stage 1 91 octane tune on my 328i until I got the downpipe and exhaust done, at which point I switched to the Stage 2 93 octane tune. I even tweaked things to my taste, going for the more aggressive variant of their 93 octane tune, and adjusting the burbles to my taste.
The bundle also includes a transmission tune, but I think XHP’s TCU tune would be better, this one only removes torque limiters and is really felt in sports mode.
Flashing it is easy, and doesn’t take more than 2-3 minutes once you’ve established the connection via ENET or Bluetooth.
Go for the Bootmod3 tune if
You’re looking to change the state of tune in the future (fixed cost)
Want some adjustability in terms of how it runs/sounds
Go for someone else (e.g.: Quantum) if
You want the sales support. If you reach out to Boomod3 for support, you will need to log the car’s data for then to help you
If you want a less DIY experience
The downside is cost when going with a local tuner. A stage 2 will cost extra if done separately, and so will the TCU tune.
Hope that helps!
One plus I forgot; you can port your license for it to another car too, say an M3, at no cost. Or you can even sell the license off to someone and still get about 350-400 USD for it. That’s a nice plus IMO.
Member - dealer
Hey Turbanator!
My response to your question can be broken into two parts :
1. Do I recommend bootmod3 as a tuning platform/tune for the B58?
A BIG BIG YES!
The OTS tunes are extremely powerful and smooth. The platform has amazing potential and you can make changes/move up in the mod tree whenever you feel like at no extra cost. Just make sure to only use 99/100 octane fuel since the B48/B58 gen 1 engines were both 11:1 high compression engines.
2. Should you get it?
Depends on how you answer the following questions -
a)How much time do you have to dedicate?
An ots tune does require you to perform datalogs (Wide open throttle run - 3rd gear, 2k to 7k rpm) when you first install the tune to make sure that the tune is performing optimally and is well suited for your fuel. You may need to do this on different octane maps (ACN91,91,93) to see which one is performing the best. Depending on the road conditions around you, this may require a certain bit of time during the first week but I consider this step a must to do for reliability reasons.
b)Do you like to involve yourself in the tuning experience?
When I chose bootmod3 over a custom tune from a tuner like gttunerz or Harmonixx Tuning for example, I understood that I would have a much more involving experience in terms of learning and extracting all the features of the bm3 platform. I thoroughly enjoyed this process but some people might just not prefer to have any extra features like (burble adjustment, map switching etc.) all of which encourage tinkering. Some prefer a set it and forget it kind of tuning process and I'm sure that's possible with bm3 but it's really hard to do when you have so many features at your disposal.