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To date, only one company still offers rom tuning in our community. ATS installs a tech tom rom board in the stock ECU and uses the tech tom software to remap some of the tables.
RickyB et al. is working on a speed-density version of the stock ECU, IIRC.
And a local speed shop does "rom tuning" as well. They specialized in Nissan's however, but they listed the 3SGTE ecu as one of the ones they can reprogram. I don't know much more about it since i've seen less than stellar tuning results from them with Toyotas.
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