Your DME is flashable via cable, but you’re really over simplifying how easy it is. (DME primarily or EGS).Īnd finally out of sheer curiosity.the DME cant do complete or rotational fuel cut for shift power reduction.right? It's not the end of the world if it can't because timing retard can be more than sufficient. Where the shift power interruption is handled. If it is possible to read and flash the EGS over OBDII or the Diagnostic Port, and if the definitions are avaliable for the EGSĢ. Fairly straightforward task, provided the tools to do so are avaliable.ġ. I see that there are many options for DIY DME tuning using romraider, a flasher, and the like- but my question is if the same exists for the EGS? If shift power reduction is mostly handled by tables in the DME, I may be able to get away with not touching the EGS tune, but ideally I would be able to increase the shift pressure and make the power cut more aggressive to extend the life of the transmission. It's not flaring at the moment- but the above behavior is the precursor to shift flare unless these transmissions just have a 2-3 shift like this and somehow hold up to that.Īnyway, one day It'll get a manual, but it's simply not in my time or budget to do that at the moment, so I am looking to modify the transmission and or DME tunes in order to prevent the above behavior from causing excessive wear to the F clutch and prematurely killing the us I just prefer aggressive power cuts with quicker shifts. It seems that the oncoming (F) clutch is struggling to match engine speed to the next gear during the shift phase, so when the shift ends and the F clutch goes to full line pressure, there's a jolt. The transmission shifts great, and behaves exactly as I would expect it to.except for a rather jolty 2-3 shift. Despite the auto and the additional weight, I am absolutely loving the car. I recently got ahold of a USA Spec 99' M3 Convertible, Auto, with 141k. Howdy folks, new member here (though a long time reader of this forum), However, the thread is still about modifying transmission controller software, so if you came here for that, it's still relevant.

There is no method to flash transmission software via OBD or Diag Port in this thread. The thread title is a little misleading in this case. EDIT: I have since learned the transmission is non-flashable as it is EPROM based.

Bmw egs software update