Having installed an AEM failsafe afr gauge I'm after a bit of input into what sort of value I should set the alarm levels to when on boost.
I have the gauge currently set up to alarm when on boost if the fuelling isn't between 11 and 13.
Does this sound about right ?

thanks

 

im no expert but those figures don't sound too bad.

I'd be interested to get a solid figure too as i'm getting a wideband monitor shortly for mine.

Where'd you get yours and how much?

 

Depends on boost, 13.0:1 at 7psi is just about ok but at 30psi you'd have a dead engine! lol

 

i would of thought when cruising you'd see afr's higher than 13

 

It was off ebay from a shop in US, from memory bout Ł180 all in.you can configure the centre and outer displays to be either boost or AFR then set limits to operate a relay.



Karlos, its holding 16psi,what do you think would be a good value to set it to alarm at with that boost level ?

its more the on boost levels I'm after as I am using the afr gauge alarm output to cut the boost.

cheers for all the input

 

I would set it to come on over 12.0:1 at 16psi.