What Af Ratios Are Considered Safe

[Cashie]

Just wondering what is generally considered to be a "safe" AF ratio across the rev range for an XR6 Turbo?

[senna_T]

Somewhere in the elevens is pretty safe mate. Sometimes early 12s can be ok, but it depends on the fuel used.

If you get a tune and the AFRs are below 12 - you should be fine

[Cashie]

  senna_T said:

Somewhere in the elevens is pretty safe mate. Sometimes early 12s can be ok, but it depends on the fuel used.

If you get a tune and the AFRs are below 12 - you should be fine

Thanks for that, so would this custom tune (in blue) look to run safe AFs? (red was a generic tune)

Edited 27/09/08 12:11 PM by Cashie

[senna_T]

In my opinion (I'm not a tuner) I thnk that tune is safe, as long as you only use 98 octane. how does it feel? I bet you are getting better fuel consumption now as well as better power

[Mr Man]

doesnt appear to go over 12.5 which is fine imo.

Edited 28/09/08 09:04 PM by Mr Man

[The_Bogan]

afr's can be anywhere, so long is the timing is set right and it doesnt ping and it always runs the fuel its tuned on its ok.

but anywhere between 12.0 - 11.8's is generally considered safe for afr's