For those of you with a stock virgin ecu, and boost and a/f gauge. At what vacumm reading does ecu switch to the maps (go to rich instead of the light show). What about people with Hondata? those with a standalone, what do you have yours set at?

I ask because i remember mine not switching until close to 0 vacumm when I was on the stock injectors+fmu, obviously this would save more gas. now, with hondata, its more like 10 mm/hg

 

i was under the impression that on the stock honda ECU, open and closed loop mode is determined by throttle position and not vacuum

 

Is it just throttle position and rpm based?

 

If either reaches a certain max it will make the switch. Once boosted though, i'm sure MAP determines it since map raises with little throttle.

so anyone watch their gauges? With gas prices like they are, I've been trying to stay in o2 feedback lately and have been getting ~28mpg city/highway compared to ~24mpg i was getting before. if it was higher I could probably go 30+ like i do if just highway driving.