3SFTE A/F Ratio advice Options

[digs]

Hi, can I ask those who have had experience in this what kind of ratios they expect to see runnning their 5sfte or 3sftes?

I have a wideband, which fluctuates around 14.2 to 15.3 at idle, and 13.5 - 15.1/2 ish off boost runs. The AEM wideband gauge does continually fluctuate though, going through various ranges constantly.

I did do boost run to see, and was measuring 12-13s on WOT. Only 2 runs as not sorted det cans yet so not monitoring detonation. No more boost runs till I work on that.

This is using 295cc injectors, stock pressure. I do have 460cc injectors available too, as well as an afpr, and have emanage blue fitted.

What is the expected values and also, should my wideband be CONSTANTLY fluctuating ? As I will have issues with street tuning as it is never on one value for long ? Or do you guys look for a range?

Any experience would be gratefully received and listened to.

This post has been edited by digs: Jul 22, 2013 - 3:27 AM

[digs]

Have fitted a 255 lb fuel pump so have that side covered. Using emanage blue which is why hesitation on the 460s as emanage only does plus 50% injector size if I understand.

However.... When I do use it's injector correction to go from 215cc (3sfe) to 295cc (3sge) it goes so lean i cant run the engine. Using cleaned 3sge injectors so flow rate as should be. Which makes me curious! With no tweaks the 3sge injectors seem to operating as stock almost, slight over fuelling. Even using 250 to 295 makes it too lean.

Bit of investigation ahead!

Emanage rotary settings 3/4/1 btw. 4 cylinder 2 coil wasted spark, plus what seems to be the map sensor settings.

This post has been edited by digs: Jul 22, 2013 - 11:31 PM