---===The Official MAFT-Pro Thread===---

[Overboosted]

So my idle problem is that I cannot get any lower than 50 hz to read on my datalogger. No matter how much fuel I remove it will not go lower. This makes sence since raising the idle and lowering base fuel pressure would change the afr leaner.

Why would I be stopped at 50hz?

I was running rich at idle before with the arc2 but I assumed it was my supra pump taking over the stock fpr. I upgraded the fpr at the same time as the pro. So it could be unrelated to the pro.

Edit: I lowered the temp and baro that the ecu sees and that seems to have worked. I got a 14-14.3 afr at idle. I cant go any leaner but thats ok with me. I have on top of that raised my base fuel pressure to 50 psi so all in all I'm happy with that.

So the only issue I got is the wideband reading .2 off.

[Rogue_Ant]

With the AEM WBO2 Gauges I've had issues with them reading slightly off. Nothing I worried about too much - just realize that its slightly off (it might be a simple latency issue).


-Rogue

[Overboosted]

so your saying the gauge might be the one thats off?

[Rogue_Ant]

Not sure which is the 'correct' one. I would guess the gauge is, and the logging signal is slightly off.


-Rogue

[Overboosted]

Oh ok, thats what I have been thinking.

[EastWingedBeast]

Originally Posted by Rogue_Ant

Not sure which is the 'correct' one. I would guess the gauge is, and the logging signal is slightly off.


-Rogue

I think the gauge is the accurate one. TunerPro logs .2 to .3 leaner for me too. Possibly voltage drop along the LONG input wire to the Pro?
Could we see an update to the v5.03 firmware to allow calibration of the wideband input? Might be good.

cheers,
Paul

PS. I've got my car tuned well now. I use the VE map, and not bother with the lo, mid, hi scales. They dont give much joy. My map looks nothing like TurboBobs either! lol

[Rogue_Ant]

Thats great! Do you mind sending me your .bin? I would like to take a look at it.


-Rogue

[Overboosted]

Nice one with the ve table. I have mine tuned pretty good from the lo,mid,high tables and am going to start doing some fine ve tuning. I seem to get a rich spot at 2k rpm that the ve table should take care of.

I love how you just gotta get it close to your target afr than turn on the tracking and call it tuned. No worry's about the tune changing on ya

It's good to hear I'm not the only one with the wideband off on tuner pro. It would be nice if that could be compensated for by the user for sure.




I got one more thing, my speedo doesent work lol. It worked fine when I first hooked up the system and started tuning but yesterday it stopped working.

I dont know if its a setting I changed or a wire issue, I am thinking to check the wires but is there a setting that could cause this?

[Rogue_Ant]

No setting in the T-Pro will interfer with your Speedo.


-Rogue

[UCSB VR4]

Just to confirm, changing the "WOT Spark" settings from say 0 to -2 should retard my timing and reduce knock right?

I made a wot pass, saw a 20 count of knock, reduced the spark settings from 0 to -2 degrees, made another wot pass, then saw the knock count increase to 30.

This was at ~15 PSI on 91 octane.

Thanks,
Jeff