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Title: Best AFR for 1.8t engines Post by: 3iverson on May 04, 2013, 09:59:56 AM Hi , guys , one question,
what is the best afr for 1.8t petrol engines in wot for high performance ? some ones says that 12.1:1,12:1 others 11.5:1 what do you think? some body has results in dyno testing this? Title: Re: Best AFR for 1.8t engines Post by: New2Tune on May 04, 2013, 10:09:58 AM 12:1 is best rich torque in theory. But in reality you may need to compromise and run richer for ocatane/Knock sensitivity/high IAT's/high cylinder temps etc. I think that range is highly dependent on the setup.
Initial tuning and feeling things out perhaps start at 11.5 or even richer and see how it goes. Title: Re: Best AFR for 1.8t engines Post by: 3iverson on May 04, 2013, 11:16:22 AM 12:1 is best rich torque in theory. But in reality you may need to compromise and run richer for ocatane/Knock sensitivity/high IAT's/high cylinder temps etc. I think that range is highly dependent on the setup. Initial tuning and feeling things out perhaps start at 11.5 or even richer and see how it goes. Thanks New2Tune for you reply , i am going to make some tests and logs to compare results , changing afr and timing a little. |