Hi guys. Tell me experienced adjusters which afr for maximum torque is better to put on our 4g93-94 motors? from 500 to 7000. 12.8-13?
500-1500 13, 2000-4000 13-13.5, 4500-5000 12.8 5500 and > 12.5 it is ok?

 

there is no set AFR for any rpm it depends on so many factors such as ignition advance, octane rating, compression of your engine and so much more you just have to log and adjust timing and fuel depending on your counts of knock. But I will tell you that lean is mean, The leaner your engine usually the more power you will make BUT you will blow up your engine if you just put all the target AFRs to 14.7. i suggest you do alot more research before you go trying to tune your car

 

That's all clear. The compression ratio is clear. And how does the octane number affect the composition of the mixture ? using 89 octane or for example 91? I set up on 91 approximately as described above. Here on the forum, I read that our machines are mainly configured for 13.1 afr, how, ideally, to set the afr? the compression ratio I have is about 10. I can use both 89 and 91 octane, but what is the difference? in addition to the detonation resistance of the fuel. For different afr, different timing