Check out my log?

[smokehouse_83]

This log is on 15psi with a small 16g at 6600 above sea level and 90 octane. I am running a stock fuel system and tuning with a maft trans in blow through. I have all the usual mods upper and lower intercooler pipe, supra intercooler, 2.5" o2 back, ported exaust mani and o2 sensor housing. I am new to logging, but I see some of the stuff is good like no knock(I am gettin 1 count onset knock) and my timing doesnt dip below 18 degrees, but my fuel trims are weird and so are my 02 volts (I have a faulty o2 sensor code)?

3rd gear pull while going through the gears
My High Mid and Low fuel trims are all 81%?

4500rpm-9ms(35%)-.66volts-28*timing-1 knock count
5000rpm-18ms(75%)-.78 volts-20*timing-0 knock
5500rpm-17ms(80%)-.80volts-22*timig-0 knock
6000rpm-17ms(85%)-.82volts-24*timing-0 knock
6500rpm-17ms(90%)-.84volts-20*timing-0 knock

thats my pull all the numbers arent exact cause I have to pull my mouse down slowly on the tmo logger to see at what rpm things are at, but its close. My duty cycle does go up to 100% towards the end of the run around 7000 rpms, but I am getting no knock there and timing is holding. I think once I change my 02 sensor things will change. I am putting a pump and fpr in this week so will raise my base pressure abit and add some more boost. I also need to do something about this 90 octane crap(its the highest octane they sell where I live) which is las vegas NM.

Drew

 

[nowayout]

Originally posted by smokehouse_83
This log is on 15psi with a small 16g at 6600 above sea level and 90 octane. I am running a stock fuel system and tuning with a maft trans in blow through. I have all the usual mods upper and lower intercooler pipe, supra intercooler, 2.5" o2 back, ported exaust mani and o2 sensor housing. I am new to logging, but I see some of the stuff is good like no knock(I am gettin 1 count onset knock) and my timing doesnt dip below 18 degrees, but my fuel trims are weird and so are my 02 volts (I have a faulty o2 sensor code)?

3rd gear pull while going through the gears
My High Mid and Low fuel trims are all 81%?

4500rpm-9ms(35%)-.66volts-28*timing-1 knock count
5000rpm-18ms(75%)-.78 volts-20*timing-0 knock
5500rpm-17ms(80%)-.80volts-22*timig-0 knock
6000rpm-17ms(85%)-.82volts-24*timing-0 knock
6500rpm-17ms(90%)-.84volts-20*timing-0 knock

thats my pull all the numbers arent exact cause I have to pull my mouse down slowly on the tmo logger to see at what rpm things are at, but its close. My duty cycle does go up to 100% towards the end of the run around 7000 rpms, but I am getting no knock there and timing is holding. I think once I change my 02 sensor things will change. I am putting a pump and fpr in this week so will raise my base pressure abit and add some more boost. I also need to do something about this 90 octane crap(its the highest octane they sell where I live) which is las vegas NM.

Drew

Injector pulse seems high.
I try to keep my at 13-14 MS I don't know which chart your using ormaybe the TMO datalogger is readig different. I'm using a pocket logger. But at 17ms injector pulse your at 100% duty cycle, I took out two piston at the track when my wastegate hose blow of and the datalogger was reading 17.5 ms INJ/pulse.
Changing the O2 will help out a lot. I would do the O2 first before trying to tune the car.
Here my log 14PSI on 60-1S trim turbo.
RPM Knock Timing O2 Inj P/W TPS
3500 1 31 0.84 6.154 82
3562 1 30 0.84 6.154 84
3625 0 31 0.84 6.41 86
3688 0 30 0.84 6.667 86
3750 0 30 0.82 6.923 86
3812 0 29 0.82 7.179 86
3844 0 28 0.82 7.692 87
3969 0 27 0.82 8.462 88
4031 0 27 0.82 9.744 89
4094 0 26 0.84 10.769 90
4188 0 24 0.84 12.564 92
4312 9 20 0.86 13.333 92
4375 9 20 0.86 13.59 93
4562 8 20 0.88 13.59 93
4625 8 20 0.88 13.59 93
4719 8 19 0.88 13.846 93
4812 8 20 0.88 13.846 93
4875 7 20 0.88 13.846 93
4969 7 20 0.88 13.846 93
5094 7 20 0.88 14.103 93
5000 7 20 0.88 14.103 93
5156 6 22 0.88 14.359 93
5312 6 22 0.88 14.359 93
5312 6 23 0.88 14.359 93
5375 6 23 0.86 14.359 93
5406 6 23 0.86 14.615 93
5594 5 23 0.88 14.615 94
5594 5 23 0.88 14.615 94
5594 5 24 0.86 14.615 94
5719 5 24 0.86 14.615 94
5625 5 24 0.86 14.872 94
5781 6 25 0.86 14.615 94
5812 5 24 0.86 14.872 94
5875 5 25 0.86 14.615 94
5938 5 25 0.86 14.615 94
6000 5 25 0.86 14.615 94
6031 5 25 0.86 14.359 94
6062 5 25 0.86 14.359 94
6156 5 26 0.86 14.103 95
6188 5 25 0.86 14.103 95
6312 5 25 0.86 14.103 95
6375 5 25 0.86 14.103 95
6469 5 25 0.86 13.846 96
6469 4 25 0.86 13.846 96
6469 4 24 0.86 13.59 97
6594 4 24 0.86 13.333 97
6500 4 25 0.86 13.333 97
6531 4 23 0.86 13.077 98
6812 3 27 0.86 13.077 98
6750 3 24 0.86 12.821 98
6812 3 24 0.86 12.821 99
6906 3 23 0.86 12.564 99
6969 3 22 0.86 12.564 99
6844 2 23 0.86 12.564 99
7094 2 22 0.86 12.308 99
7156 2 22 0.86 12.308 99
7125 3 23 0.86 12.308 99
7125 3 23 0.86 12.051 99

 

[smokehouse_83]

so you o2s are supposed to be in the .80's?. Looking at the conversion chart at http://www.ecanfix.com/~mdhamilton/dutycyclechart.html it looks like you are running aound 70 to 75% duty cycle which is abit low for most people they like to end up in the 80% range, I am getting up to 100% but its only for a second before I shift around 6800rpm but its not a problem becuase timing isnt getting pulled and I have no knock. And thats the other thing you are getting alot more knock then I am, thats what holes pistons not high duty cycle. Whats up with my fuel trims?

Drew

 

[Mike 99GSX]

Originally posted by smokehouse_83
Whats up with my fuel trims?

Drew

Is the 81% during closed loop or during this WOT pull? Your fuel trims mean nothing at WOT. They're used for closed loop only.

 

[smokehouse_83]

They are during a run at wot.

Drew

 

[Mike 99GSX]

Originally posted by smokehouse_83
They are during a run at wot.

Drew

Well then, they don't mean anything during WOT. You use them to set you're low throttle settings on you're AFC. They should be as close to 100% as possible.

 

[smokehouse_83]

so should I mess with the low mid and high settings on my maft translator till all three are closer to 100%? Would I add fuel or take it out to go up from 80%? Or am I going to need more fuel pressure or bigger injectors to do so?

Drew

 

[Mike 99GSX]

Originally posted by smokehouse_83
so should I mess with the low mid and high settings on my maft translator till all three are closer to 100%? Would I add fuel or take it out to go up from 80%? Or am I going to need more fuel pressure or bigger injectors to do so?

Drew

I've honestly never seen a translator in person so someone else should tell you which knobs to turn but you need to take fuel out of the "low" setting. 80% means that you are rich. Your ECU is pulling out 20% fuel to compensate or something like that. But it means you're rich.

 

[smokehouse_83]

How the hell can I be rich with a stock fuel system and a 16g at 15psi? I have all the knobs on the maft translator zero'd out. Maybe the car has a aftermarket fuel pump I dont know about? So I need to take out fuel slowly and watch my logs so I dont take out too much?

Drew

 

[90AWDTalon]

Originally posted by smokehouse_83
How the hell can I be rich with a stock fuel system and a 16g at 15psi? I have all the knobs on the maft translator zero'd out. Maybe the car has a aftermarket fuel pump I dont know about? So I need to take out fuel slowly and watch my logs so I dont take out too much?

Drew

Your running rich at idle and partial throttle, durrying these conditions you are no where near maxing out your fuel system. WOT is another story all together, but thats not what we are talking about here. On the MAFT the idle and mid nobs will help adjust your idle and cruise fuel trims. Slowly lean out these settings, give your car time to adjust, log again, and either keep it at those settings or make more adjustments. You'll get better gas mileage, and better throttle response.

Theres lots of tutorials around for this, you don't have to use one specifically for the MAFT, they all work on the same theory. So even if the tutorial is for SFAC or TMO you should be able to use it.