New maft ? to recent ecu

[danyz250f]

I got the fuel trims to 81.2%, 92.1%,82.2%. They seem to stay the same now. I was wondering if I should recet the ecu again?

What does open loop mode mean?

 

[steve]

I got the fuel trims to 81.2%, 92.1%,82.2%. They seem to stay the same now. I was wondering if I should recet the ecu again?

Leave it for a while and see if the trims start going back up. Right now it's stable but pretty much maxed out low and high. You need to lean it out more to get it to climb and then it will stabilize again and you have to tweek it from there. If you reset the ECU it will just dive again until the ECU makes up for the amount your off like it has right now.

You need to get it to move closer to 100% by your MAFT adjustments in order to tune it better.

What does open loop mode mean?

It means not closed loop.
Open loop is when the ECU isn't using the feedback from the O2 sensor to adjust it's fuel injection. At WOT the car is running open loop.

Steve

 

[danyz250f]

Oh ok. This maft is sweet by the way. My trims are a solid 81.2, 81.2,81.2. I hav driven about 100 miles like this mostly highway.

So do I lean out the BASE nob a click and that should bring it back up?

Also when cruising and I accelerate sometimes and boost but not usually wot, it will start to knock like 40 counts so I let off and hit it in alittle different rpm and I boost without any or next to no knock.

I get about 8lbs then at around 4500 it will climb to 14 lbs of boost.

Here is a log:
knock O2 MAFS
2500 0 .87 pretty steady climb
3000 12 .89
3500 13 .91
4000 11 .91
4500 9 .89
5000 8 .89 max to redline 1603.9 hz
5500 7 .89
6000 5 .87
6500 3 .87

I did another log right after this one mostly similar but one to zero counts of knock.

 

[DSMcamaro]

The Base knob is for setting your injector size. You need to lean out your Idle, Mid, and WOT knobs.
2.0 and up instructions.
http://www.fullthrottletech.com/showthread.php?t=105
I'm having some problems of my own right now with my MAFT. But hopefully I'll get it figured out.
http://www.dsmtuners.com/forums/showthread.php?t=221621