View Single Post
Old 09-12-2019, 09:28 AM   #12 (permalink)
Ecky
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 5,075

ND Miata - '15 Mazda MX-5 Special Package
90 day: 39.72 mpg (US)
Thanks: 2,902
Thanked 2,560 Times in 1,586 Posts
Quote:
Originally Posted by serialk11r View Post
Correct, many older engines did not run rich at WOT until about 3500-4000rpm. Stepping hard on the gas is less detrimental in those cases.

Everything newer though does go rich. All of the Toyota [A/N/Z/G/U]R engines do for example.
I'm getting a bit off topic here, but this is in reference to engines as new as engines as new as 2015. I don't know if the revisions which got direct injection started going rich under heavy load, but that would be in the last 4-6 years.
  Reply With Quote