I agree with you UberRoo. I seriously doubt anything long-term will be saved on the ECU and if something is, the ecu will re-learn itself once premium gas is used again.
Nismo, if you want to get the best gas mileage or even the ultimate performance out of your SVX, you need to use premium. If not, then running regular gas shouldn't hurt your car - as long as your knock sensors are working.
-Chike
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Originally posted by UberRoo
Others believe that the ECU will permanently recalibrate itself and original performance will never be fully restored. I've seen no evidence of the latter, and it seems illogical and improbable to me
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