Quote:
Originally Posted by ayau
How does the timing on the newer rom differe in layman's terms?
Also, if Subaru/Toyota isn't willing to flash early adopters to the latest rom, can you just buy an ECU and have the latest rom included?
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The newer tune pulls timing during hard redline shifts where the old tune doesn't. Cars tuned to the edge of knock can experience "shift knock" due to transients that the air/fuel/spark delivery system can't keep up with. The transient retard system provides a way to compensate this and keep the engine knock safe. It's a very good capability to have.
That said, looking at these tables, I question the "hole" that remains between 3800 and 5600 rpm.
As far as flashing a rom with a new table: no problemo, and this is what I would do if I had an 00C car (no ECU replacement necessary, it's simply software). As far as flashing a rom with a different definition, well, you go a little slower here. Some WRXs (for instance) go through a few different roms with different definitions on identical hardware, and in these cases I've flashed a different generation rom over another -- usually because I didn't have a complete definition of the rom that was on the car. Scared me to death the first time I did this, but no issue. As long as the ECU hardware or anything attached to it hasn't changed functionally, it can probably be done (check twice, flash once, and for heaven's sake get a better opinion on it than mine).
I have no earthly idea why Toyobaru has any reluctance to flash 00C cars. This is dirt simple and fast to do with RR and ecuflash, it ought to be just as fast for a dealer.