Mapping a 2gr ECU

[gavsdavs]

My understanding was the Toyota version 2GR-FE ECU was fundamentally "locked" because (and this is my laymans understanding) they use ROM, where as mappable OEM ECU's use EPROM or similar whihc means they can be updated periodically by the dealer / OEM.

So - can you have an EEPROM burned and switch it in for the existing ROM?
Or does the ECU not boot ?
I'm curious if the ECU is limited, or simply what the ROM permits it to do.

[knightrous]

The hundreds of hours of reverse engineering and fiddling that is required to hack a stock ecu (and deal with it's limitations), it's more cost effective to buy an aftermarket ECU and develop your own tune for it. I'm suprised no one has grabbed a MS3PRO Module, slapped down a custom 2GR PCB with connector for it and pushed it out for sale as a drop in, plug and play ecu.... Could even put it in a factory case :)

http://www.diyautotune.com/ms3pro_module/index.html