Quote:
Originally Posted by rinnamon
Does this mean that the ECU isn't quite set up correctly for E10? If people use E90 or whatever (with the OFT tune) and don't get chirps and if people use the stock "tune" with E0 and get no chirps, then simple logic suggests that something in between (e.g. E10) needs its own tune (which could produce quieter results somehow).
What is it about the OFT tune that causes the change? Is the pump flow rate, timing, etc changed?
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The noise is derived from the mechanical operation of the fuel pump, no ECU tune will change that.
Quote:
Originally Posted by DoomsdayJesus
At least Costco is dirt cheap top tier gas. I've noticed Arco advertising top tier gas as well recently, although I'd have to see independent verification to believe it.
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I asked in the top tier gas thread and nobody answered me, is top tier gas anything more than a marketing scheme?