Afr learn and cam choice
Hi.
I have used cam setting 3 on my engine and it works good. But my afr learn is around 30- 33. I changed to cam 4 and my afr learn is no around 10- 15 so much better. The issue is when I'm driving slow at about 1000 to 1200 rpm it's a little jerky (botch is maybe the right word) when I give it a little gas.
Should I go back to cam 3?
383 sbc 445hp ,
no timing control
fitech go efi 600
What is your vacuum at idle and how much lift and duration @ .05 do you have?
Vacum at idle is between 10 and 11. 800 rpm idle. I dont have more info on the the engine in afraid.
3 should be the correct cam with 10-11 inches Hg at idle and you most likely don't have a vacuum leak, so there must be something else going on to have such a high AFR learn value.
Thanks. Any tips on why you can get a high afr learn?
What's the fuel pressure reading at the fitech inlet?
55psi. Afr is around 20 at idle now. So much better. Thanks.
Wow, AFR at 20 and your plugs don't look too lean? If your plugs look rich or normal with that AFR, you probably have a leak around your O2 sensor bung. Oh, is that your AFR learn value? That is a good question, what is your AFR reading?
Sorry I'm I mean afr learn.