Quote:
Originally posted by antero
Checked out my datalogs. Timing is 2 degrees lower at 5200 rpms when comparing the -27% logs, and -14% logs. Who says this mod doesn't work? The closer we get to 0% correction the closer we are to a normal timing curve.
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I've said it before, I'll say it again -- you are still applying the same amount of total correction. Whether or not that correction is done with the AFC makes no difference.
Timing might decrease for a number of reasons (including temperature, etc) -- but the most likely is that you are making more power at the same boost due to less pressure drop through the MAS. You have a higher density ratio at the same boost pressure, simple as that.
Quote:
Originally posted by antero
The only people that say the mod doesn't work are blined by what logic dictates. All theory and no practice makes some people doubt without giving it a try first.
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I never said the mod doesn't "work" -- it should work if your intention is reducing pressure drop from flow loss at the MAS. I stated and maintain that it is
impossible for this mod to reduce timing in the claimed way. There is still a total corrected airflow value at the ECU -- whether that correction is done electronically or physically
matters not.
Any difference in total timing you may see represents MORE POWER being made due to higher air massflow (at the same boost). You can achieve that same timing reduction
without this mod by increasing boost pressure, but knock will probably prevent you from doing so safely.
-Chris