Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

How to determine high boost vs low boost?

Understanding AFR

Forum Posts



Tech Articles

Discussion and questions related to the course Understanding AFR

= Resolved threads


In the course it lists suggested AFRs for "low boost" and "high boost", but what might be low boost in one application might be high boost in another.

How do you determine what the correct breakpoints are? Do you require EGT to determine this? Are there clues we can look to in order to help us determine the correct target AFR especially in boost?


What engine, what mods, what ECU?

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?