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

Ends in --- --- ---

Injector sizinhg

EFI Tuning Fundamentals

Forum Posts



Tech Articles

Discussion and questions related to the course EFI Tuning Fundamentals

= Resolved threads


In the first slide of the video (before starting the video) the Max Duty Cycle is a multiplier hence the injector size is 70lb/hr.

But later in the video the Max Duty Cycle is used as a divider and so with the same numbers the injector size becomes 97lb/hr.

I think the 2nd is correct as decreasing the max duty should increase the injector size.

What about BSFC? Isn't the 0.55 too low for a turbo charged engine?


both are correct because at that point the maximum working duty had not been discussed duty. but you are also correct use the 2nd example for safety margin. 0.55-0.6 is fine for most applications

Regards Ross

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?