Just got my Wideband installed.

Only temporary in the stock location untill my box from TU comes in. I have some concerns though. Under part throttle accel My AFR shoots to around 16:1 and under Decel my AFR is around 12-13, But under cruise I am at 14.5-15.3 and WFO I get 12-12.5:1. So whats the deal and why is my computer doing this. Is it because I have run for so long with the narrowband not even there? I am running a Techedge unit and the NB from that is hooked up but I didnt reset my sbec.

Attached is a screenshot of the datalog, The beginning is cruisee at 14.7, then there is a part throttle accel which shoots to 15.6, finally a decel that shows a 12.5. I couldnt log a full throttle where I was but thats around 12.3.

I know the signals are noisy but that didnt happen untill I hooked up the wideband(I think theres a jumper to fix that) and my map is in +- psi right now and isnt accurate. I havent found a good voltage lookup table for the stock 2 bar.

The computer is using preset tables at cruise or part throttle, sometimes using the ox sensor, so if your running more boost or a bigger turbo, more flow etc, and your running a stock computer, it can't compensate. Ditto for running a new cal, if you haven't adjusted the tables enough, you could be lean. A wot, it ignores basically everything but the MAP sensor and again, goes into a preset table which is usually very rich to avoid blowing up the engine.

Idle the ox sensor is used so around 14.7 is reached, part should be 13 ish and full should be 11.5:1.

So you haven't had any O2 hooked up for a while? Reset the ECU always. It usually takes my car about 2 days before it starts adapting based off the narrowband output. Before that it's using the hard curves.

Alright Ill reset it and I am running a slightly bigger turbo its a half assed hybrid with a .63 housing plus I have an intercooler with hardpiping. I guess the preset tables for the mitsu dont cut it lol.

Quote:

---

Originally Posted by shackwrrr

Alright Ill reset it and I am running a slightly bigger turbo its a half assed hybrid with a .63 housing plus I have an intercooler with hardpiping. I guess the preset tables for the mitsu dont cut it lol.

---

Yep, lol.

Quote:

---

Originally Posted by turbovanman

Yep, lol.

---

BEEN THERE! :nod:

Quote:

---

Originally Posted by badandy

BEEN THERE! :nod:

---

I think we all have, :eyebrows:

Now that the computer can see that should it give some more fuel or should I be investing in an ostrich sooner?

I reset the computer and I will drive it for a while but I did a half throttle pull and it will be 16 even at 10 psi

You should be getting a cal or an Ostrich before you blow it up or a temp bandaid is +20 injectors or an AFPR.

if your on a stock cal, part throttle boost is a no-no as it will melt something