rb20det AFR questions

[Black_label_240sx]

first and foremost, happy 4th everyone !

My question is about general afrs,

my setup ina nutshell
t03/04e turbonetics turbo
255 walburo
550 cc deatschwerk injectors
aem 620 box
3.5 map sensor

Currently running a 12 afr on warm idle, and about 13-14 on town driving.
havn't tuned for boost yet.

Wondering if the low afr of 11 is prefered for boost and also what are good cruising afrs? or spooling up afrs?

thanks !
any other advice or better ways to post a question always welcome

[Seishuku]

12 on idle is pretty rich...
I usually target a little richer than 14.7 at idle, but my SR is a little different than your RB, I'm also running a Megasquirt which does batch fire injection, so I need to be a little richer for a smooth idle.

My cruise AFR is between 16 and 17, generally you shoot for as lean as you can with out getting too hot or getting pops and stumbles.

11.5:1 is about as rich as I would go for under full boost/load, but it depends on the engine... I've noticed that my SR wants a little richer mixture to get full power, it's kind of weird.

Transient mixtures are tricky, you can try easing into full load AFR, but ramping up into full load AFR quicker may give a faster hit of power... Throttle enrichment will also play into this as well.

[Black_label_240sx]

okay thanks.