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Old 07-28-2020, 09:42 PM   #1930
steve99
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Quote:
Originally Posted by Compelica View Post
Thanks @steve99, this will come off as a stupid and ignorant question but please humor me as I'm trying to piece the logic in my head:

I notice that the common answer to fix knock is to always reduce timing to solve it. Now I do get however that reducing timing is a sure fix but would that be less performant which is counterproductive on maximising performance for a given target fuel and mods.

If stock roms are going rich to 10 AFR surely adding fuel to knocky areas would be a better solution? Or... is it because adding fuel complicates things versus just dropping timing?

Appreciate it

10 afr is way to rich for max power its to save cats in header
max popwer is theroeticly 12.5 on petrol but poorer quality fuels or high compression engines its more like high 11 to low 12.


Its a balancing act between ignition timong amd afr, richer ie below 12.5 looses power and more timong increases power untill you get to MBT which you almpst never do on petrol so your jist knock limited
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Compelica (07-28-2020)