3h • General discussion
Knock retard costs you 19 seconds, here’s why?
Everyone who knows cars and tuning should know, knock retard pulls timing to protect the engine. What nobody talks about is the cost AFTER the knock is gone.
On a GM or Chrysler platform, the PCM restores timing at 0.8°/sec. Take a 15° hit and it's nearly 19 seconds before you're back to full timing, the pull is over before your power is back. It doesn't throw a code. It just shows up as a slow car.
A file that constantly trips knock retard isn't protecting your customer. It's choking them, quietly, every pull. The fix isn't more aggressive retard. It's correct timing for the fuel, the boost, and the platform, so the engine never reaches for the safety net.
This is all readable in the log and in the map. If you know what timing should be at a given load and RPM, you can see exactly where a file is leaning on knock retard to cover for bad calibration.
We read every file before it ships. Maps read, not guessed.
Stop trusting. Start reading.
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Knock retard costs you 19 seconds, here’s why?
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