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Forget everything I wrote yesterday about torque limiter codes. I found a few logs on the forum and everyone has these codes, so it's not your car, but seems to be a BM3 thing, so "works as designed". The others also have similar power figures and times as you, so everything is fine in terms of...

What are your mods ? Any TCU tune ? I can imagine, that it needs a little time to change the adaptations - but I’ve never experimented that. You should maybe try to reset the adaptations at least for knock detection and octane rating (don’t touch the throttle!).

I don't know, it definitely sounds strange. I don't think its LSPI but I've never seen anything like it. You start driving in 1st gear, and immediately (speed = 2 @1173rpm) you get a knock and the strange torque limiter code (128), and it stays there even after swith to 2nd gear. At that point...

It's hard to get anything out of your long log, but you have several error codes (Torque Limitations 4,8,128). see here : https://ecutek.atlassian.net/wiki/spaces/SUPPORT/pages/469270529/BMW+Limit+Flags+States And - you probably don't want to hear this - 2 knock detection. You will see them by...

I had a similar situation several years ago with a piggybox. To rule out a fault in the control unit, I would use the blind plug (you should get that with the piggybox). It should short-circuit the input/output channels. This means that the signals will be forwarded 1:1. If the error...

Yes, you're right. And I admit that I thought the topic creator was also using a regular unlock, which only allows calibration files. But he has a Supra, where the unlock is not necessary at all. MHD also has a MHD+ with custom ROM, but unfortunately does not work with the newer models...

Then you are one of the lucky ones. But if you have CustomROM with limiters removed and fully customized software, then you shouldn't have any limit codes, right? There is eg. code "4" at every gear change, which means that the gearbox requires less torque from the DME to be able to shift up...

The 8HP has 5 clutches, some open and some closed - depending on the gear. Drifting is like driving with slipping tires, so yes, the clutches are closed. If you need some info on xHP and generally how it works, read through their blogs : https://www.xhpflashtool.com/blog/ There are some...

This depends on when your car was produced and which DME is equipped with it. Since 2020/6 it's not so easy to do that. There are two unlock options: normal and custom. And yes, with custom you can also do mapswitching, remove limiters, etc. This wasn't a problem before (before the DME lock)...

For me the benefit of xHP ( or any transmission tune) is not the faster shifting (however it's really a bit faster), but the chance to have my transmission with me for a longer time. The transmission in the Supra/Z4/M340i is a ticking timebomb. Sure, it holds more than specified, but the key is...

Sure you can do a lot more then 500NMm without xHP. You could even try to do more the 750Nm but it would lead to a slip. The limiter sits at about 550NM (?) , but the official specification of your gearbox is 510 NM. Therefore I'm pretty sure, that BMW will not go over that value ( or at least...

If you have the 383hp version then there is something wrong. The factory spread should be within the 5% limit, i.e. in the range 360-400 HP crank. The BMWs are more like +5%, so let's say you should have about 400HP without tune (I don't want to start any discussion about WHPs from dynos with...

That is interesting. This is a sensor value and should show the reality. You could even calculate the approximate power from this value (MAF g/s multiply by 1.25-1.3 depending on the AFR value). In my MHD log with Stage 2 OTS I see MAF values over 380g/s, which corresponds to 1368 kg/h.

I'm not really familiar with the BM3 protocols (I use MHD), but there is a strange thing – at least for me. Your MAF value peaks at 1020kg/h and then stays there for the entire protocol, which is, impossible. So imho there should be an error with the logger or with the MAF sensor. ( or maybe you...

I think you are facing the same problem as me. The fault code you mentioned comes from the TCU and is a sign of "slipping". But there is another way to analyze the problem. You use MHD, so you can also log. There are 2 important things in this log. The first is the "Torque Limiter Status" -...