Quote:
Originally Posted by wnta1ss
I think what he means is laynlo15 can tune it with E85 for his upcoming race. Without the sensor hookup, the ECU won't know the ethanol content, and therefore won't be able to adjust for a variance in eth content. That would not be a problem though, if he is using the same E85 to race as he used to tune.
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Exactly. No need for the sensor if you are going to control the ethanol content. My E85 straight tune is not some arbitrary changing of the gas tables. I generated spreadsheets to do the exact same interpolation the ECM would do as if the sensor was installed for each and every table we have access to. I also generated a Matlab script to take my Dynojet data and calculate the proper shift points for the A8. 1->2 and 2->3 shift points are fine but 3->4 and up extend too far with the E85 torque curve. These are assuming the stock intake manifold. The MSD intake manifold will push the shift points up.