I was reading your page at https://www.torquecars.com/bmw/m70-tuning.php
Great web page, lots of useful information!
In it, you say: "Remaps should help to unlock the full potential of all the mods you've done to your M70. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.)"
Can you explain what is meant by "the factory ECU is locked"?
On the M70 engine, the ECUs have replaceable chips, for which many aftermarket versions are available as plug-in replacements, so flashing and locking are not issues.
But on the M73 successor engine to the M70, built for OBDII, the ECUs have EEPROMs, about which I have heard the term "locked." People say you will brick them if you try to flash them. I have also heard of tuners who are able to work around this, but have never actually been able to find one.
Can you explain any more about how this works, and why those ECUs cannot be flashed?
Or refer me to any links that discuss this further?
Thank you,
-- E31Ron-
Great web page, lots of useful information!
In it, you say: "Remaps should help to unlock the full potential of all the mods you've done to your M70. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.)"
Can you explain what is meant by "the factory ECU is locked"?
On the M70 engine, the ECUs have replaceable chips, for which many aftermarket versions are available as plug-in replacements, so flashing and locking are not issues.
But on the M73 successor engine to the M70, built for OBDII, the ECUs have EEPROMs, about which I have heard the term "locked." People say you will brick them if you try to flash them. I have also heard of tuners who are able to work around this, but have never actually been able to find one.
Can you explain any more about how this works, and why those ECUs cannot be flashed?
Or refer me to any links that discuss this further?
Thank you,
-- E31Ron-