K4Tuning Posted June 4 Report Share Posted June 4 Hey all Link G4X PnP user here for my USDM evo 9. I have a question regarding ignition timing vs boost. Im dialing in my car on E85 and im reading more in depth that evos in particular seem to like anywhere from 0-5* ignition timing at peak tq and then upwards from there to redline. I have 3 different boost levels that I am tuning to with my car. Wastegate is 15psi, Boost level 2 at 25psi, and Boost level 3 at 35psi. If all is correct in regards to the 0-5* at peak tq, how does this change with increasing boost levels and torque output, and how do these values work with a flat tq curve? I assume the strategy is to tune to my lowest map and then build further for map 2 and then map 3. If anyone more experienced in tuning has any helpful input that would be greatly appreciated Thankyou! Quote Link to comment Share on other sites More sharing options...
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