The new “what did you do to your Z today” (with off topic replies) XXXVIII

JARblue · 10-05-2020, 08:27 AM

Quote:

Originally Posted by Spooler

Well, what ya gonna do if you have detonation and your knock sensor doesn't pick it up? With E85, that can happen. Blow a headgasket, break a ring land, and the engine shows signs of detonation but you don't see in your logs. Mostly happens to folks on pump E85.
My engine builder told me to be on barrel E85 if running the higher boost settings. Ignite Red or Ethanol One R.

I realize it can be an issue with pump E85 due to the randomness of the ethanol content. But there have been a couple of NA guys who had similar issues and weren't running E85. I think they both ended up lowering the sensitivity on the knock sensor on the advice of their tuner. Trying to remember who they were and which tuners. But I can't find it right now.

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