Turbotrix working on ECU Flash

[fnkngrv]

Originally Posted by cali yaris

Keep it open, and let's discuss this instead.

I just spoke with the gentleman at Dynotronics Tuning. He said that there are actually two ECUs for the Yaris and depending on which one you have in your ride will determine whether or not they have actually hacked it or not. Traditionally speaking he also said that if you have the one that they have not played with then he would need between 100-150 owners to pipe up and say that they would be willing to pay the roughly 400-450 to have it done. He said that when it comes to the process it can be whittled down to:

1) Accessing the ROM
2) Deciphering the ROM
3) Creating an easy/quick to use GUI for the ROM

Since Toyota is notorious for making the ROMs pretty heavily locked and he had a single owner for example looking for the ECU to be tuned they are looking at around $20-$40k in the R&D process as it is very time consuming. Even at the 150 owners having an ECU build he would only be breaking even. It can take months and a lot of trial and error. He also said that there is no true open loop anymore with ECUs as they have the Wideband/Narrowband style front O2 sensors which plays havoc with configurations coupled with the Long Term Fuel Trim (LTFT) ability however the LTFT is academic compared to how critical to the ECU that front O2 sensor reading is. He was able to confirm right away that is definitely the reason why someone with a piggyback such as the FIC has to retune a lot as well as disco'ing the battery every so often.

Essentially this place looks like a practical dead end as well with one exception. The owner at Dynotronics Tuning is having me email him and he will be passing on the contact info for a newish "very hungry" company out of the midwest. He said that he met they at SEMA this year and that they very well may have an ECU that could replace the stock one that would support all functionality of the OEM one to include ABS and DBW however he also said that they very well may only support true racing applications as messing with the throttle system (DBW) can be a serious legal liability which is why the bulk of the standalone ECU companies will for the most part tell you that they can't do DBW. He said also what is interesting is that the ECU box from this company is very small and looks like something on a Yamaha or Kawasaki motorcycle.

MTF