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

[Syaoran]

I don't wanna sound condescending but it's your engine's funeral. A reliable tune is more important than anything in a turbo engine. It is something a piggyback really can't offer. It's not the same using a piggy back to adjust a few fuel settings here and there on an already turbo engine (like using a SAFC in a 3SGTE), vs using a piggyback to tune a NA engine made turbo.

It's not that you're having "issues" on boost... you're killing the engine on-boost the more you beat on it without proper tuning.

[digs]

I don't wanna sound condescending but it's your engine's funeral.

it's all cool, appreciate you guys taking time to answer my questions. I get what you are saying, effectively creating a new engine (3sfte, or the 5sfte) should have a new ecu (not piggy back).