Fail noob question: What should target AFRs be?
#1
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Fail noob question: What should target AFRs be?
Yes, I have my flamesuit on and will openly admit that I have never tuned a FI car and have nearly no experience with MS.
That being said, how does one know where AFRs should be at for a specific pressure?
Car is a 96, Brain built MS-I.
That being said, how does one know where AFRs should be at for a specific pressure?
Car is a 96, Brain built MS-I.
#2
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Experience.
In the cruising cells (everything that's neither boost nor idle) the low to mid 15s are a good target.
At idle, some cars like stoich (14.7) while others prefer to run a bit richer (mid 13s), which is largely a function of injector size.
In boost, you'll want to enter at the high 13s and taper down into the 12s at the top of the table. This is just a general guideline- you'll need a dyno to find the schweet schpots.
In the cruising cells (everything that's neither boost nor idle) the low to mid 15s are a good target.
At idle, some cars like stoich (14.7) while others prefer to run a bit richer (mid 13s), which is largely a function of injector size.
In boost, you'll want to enter at the high 13s and taper down into the 12s at the top of the table. This is just a general guideline- you'll need a dyno to find the schweet schpots.
#3
Here's a good thread to start reading.
https://www.miataturbo.net/megasquirt-18/anybody-mind-post-their-afr-target-tables-29956/
You'll notice that nobody uses the same tables as every car is different. I'm using this currently.
I'm running ±160kPa so my table only goes up to 183kPa
https://www.miataturbo.net/megasquirt-18/anybody-mind-post-their-afr-target-tables-29956/
You'll notice that nobody uses the same tables as every car is different. I'm using this currently.
I'm running ±160kPa so my table only goes up to 183kPa
#7
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Several respected tuners of naturally aspirated motors have said that the best range for power and safety at WOT is within a couple tenths +/- of 13:1. It seems like a bunch of you run leaner than that in your 100 kPa row and I'm curious what the reasoning behind that is.
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