1st log and it looks very wrong

[DSM-Franek]

Any suggestions? I posted here since i'm a "new member"

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What is with my o2 voltage?


Thanks
-Frank

 

[BISHILVR]

I would say, bad o2 sensor. You are getting really good timing for o2 sensor voltages like that though. I wish I could have timing like that. I get negative timing, and then the most I ever get on the throttle will be maybe 6 degrees or 7 degrees or so.

 

[JayRolla]

I would change the o2 sensor. Also how much boost you running thats a lot of knock.

 

[BISHILVR]

What is your boost set at? it must be fairly low. You can leave the other o2 sensor values out of the logs. Is you tps reading 100%?

 

[BISHILVR]

Also how much boost you running thats a lot of knock.

If that was a question for me, I have even ran it with the knock sensor unplugged to see if it was real knock or phantom knock or just a messed up sensor, no difference. On a 2g it wont set a code for an unplugged knock sensor, its a passive sensor.

 

[JayRolla]

Unless the airflow is incorrect for some reason. I had an o2 sensor fail and it didnt creat knock like that.

 

[DSM-Franek]

If that was a question for me, I have even ran it with the knock sensor unplugged to see if it was real knock or phantom knock or just a messed up sensor, no difference. On a 2g it wont set a code for an unplugged knock sensor, its a passive sensor.

The o2 sensor is BRAND new. Only about 1k-2k miles on it.

Im running about 16psi but creep to 18-20psi

Thanks
-Frank

 

[DSM-Franek]

If that was a question for me, I have even ran it with the knock sensor unplugged to see if it was real knock or phantom knock or just a messed up sensor, no difference. On a 2g it wont set a code for an unplugged knock sensor, its a passive sensor.

Here's another log

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The o2 sensor is BRAND new. Only about 1k-2k miles on it.

Im running about 16psi but creep to 18-20psi

Thanks
-Frank

 

[DSM-Franek]

For reference my safc settings are:
Low settings:
1k -5%
2k -10%
3k -18%
4k -18%
4.5k -18%
5k -18%
6k -18%
7k -18%
High settings:
1k -23%
2k -26%
3k -28%
4k -35%
4.5k -34%
5k -37%
6k -38%
7k -38%

Throttle points are:
Low 35% and High 85%

And my mods are:
6 bolt, SBR bastard 20g, 3" straight pipe turbo back (apexi),Injen intake, BIG greddy FMIC, greddy type-s bov, greddy turbo timer, 660s, rewired walbro 255, AFPR set to 43.5psi, SAFC 1,

 

[BISHILVR]

The timing for a 2g is'nt that bad, remember that 2g's dont have the same aggresive timing that 1g's got due to the higher compression of the 2g. You definately have some issue with the o2 sensor, do you by any chance have one of those stupid lean/rich led displays wired into the o2 sensor? I've seen that do it.

 

[BISHILVR]

For reference my safc settings are:
Low settings:
1k -5%
2k -10%
3k -18%
4k -18%
4.5k -18%
5k -18%
6k -18%
7k -18%
High settings:
1k -23%
2k -26%
3k -28%
4k -35%
4.5k -34%
5k -37%
6k -38%
7k -38%

Throttle points are:
Low 35% and High 85%

And my mods are:
6 bolt, SBR bastard 20g, 3" straight pipe turbo back (apexi),Injen intake, BIG greddy FMIC, greddy type-s bov, greddy turbo timer, 660s, rewired walbro 255, AFPR set to 43.5psi, SAFC 1,

This would explain the agressive timing with the lousy o2 voltage. Its best to get a eprom ecu and a chip if you are pulling that much fuel.

 

[DSM-Franek]

This would explain the agressive timing with the lousy o2 voltage. Its best to get a eprom ecu and a chip if you are pulling that much fuel.

That's the thing I made these logs to see where my safc settings were at. I know they are messed up I think I may just set my safc to -18 across the board and make another log.

Any suggestions on that?

Thanks for the help so far!
-Frank

 

[luvmygst]

Looks to me like you are pulling too to much fuel at the top end. Your timing starts to drop off at like 6000rpm or so. That is where the timing starts to go down. I would double check the O2 also.

 

[DSM-Franek]

Looks to me like you are pulling too to much fuel at the top end. Your timing starts to drop off at like 6000rpm or so. That is where the timing starts to go down. I would double check the O2 also.

I just set my high settings to -25 across the board and the car feels ALOTTT smoother. I will do another log in a little bit!

Thanks!
-Frank

 

[DSM-Franek]

Alright this log looks better I think.. The o2 voltage is higher but still not where it should be I don't think. This log felt ALOT smoother too.

Any suggestions? This is at 17psi creeping to 20psi by redline

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Thanks!
-Frank

 

[BISHILVR]

Go another 5% and lets see it. From 2900 to 4300 or so, you could use alot more fuel.

 

[DSM-Franek]

Go another 5% and lets see it. From 2900 to 4300 or so, you could use alot more fuel.

So you're saying go to about -20% from -25% from 2900ish-4300ish?

Thanks again for the help so far!
-Frank

 

[BISHILVR]

I'm saying go 5% more at the area where you were adding fuel before to get that area dealt with, and then you also have a huge lean area from 2900-4300 to deal with so more adding in that area.

 

[kenamond]

Alright this log looks better I think.. The o2 voltage is higher but still not where it should be I don't think. This log felt ALOT smoother too.

Any suggestions? This is at 17psi creeping to 20psi by redline

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Thanks!
-Frank

If the O2 sensor is working, you wanna get your values up above 0.9v or so. I'd add fuel in small increments until you get there. That timing is strange. I can't even see when boost comes on; your earlier post retarded timing to 9* at 3500, and I was assuming that's when boost hit, but you can't even see the timing pull in this last log. The O2v look reasonable for part of the pull (but they're WAY too lean), but you still start out with the impossibly low values. I don't know if that means they're way rich or way lean.

 

[CanadianTSi]

First set of logs looked much better(but you were a little lean up top) 2nd set the timing is really low.

Somewhere around -30 is where you should be for 660's.

 

[BISHILVR]

I'm pretty sure the timing is lower because he added fuel (airflow) And the first set were crazy lean.

 

[RayPeters]

While I know its possible, running 660cc injectors and trying to use a piggyback computer means the timing is WAY too advanced. The other guys helping you are giving you good feedback, I'm not a big 2G guy, but I'd suggest resetting your base timing once you get your fuel dialed in. You'll have to make a comprimise for where the knock is worst, but it is better than wrecking an engine. That is the only way I've had much sucess helping t he piggyback cars with knock from such large modification of the airflow.

 

[DSM-Franek]

First set of logs looked much better(but you were a little lean up top) 2nd set the timing is really low.

Somewhere around -30 is where you should be for 660's.

But what's with the o2 voltage in the first 2 logs?

Thanks for your help
-Frank

 

[CanadianTSi]

Does your o2 voltage cycle back and forth when your at idle/cruise? Its not used under WOT so I wouldn't worry about it too much as long as its fine during Idle/Cruise.

If you want to know your real Air Fuel Ratio at WOT get a Wideband.

 

[DSM-Franek]

Does your o2 voltage cycle back and forth when your at idle/cruise? Its not used under WOT so I wouldn't worry about it too much as long as its fine during Idle/Cruise.

If you want to know your real Air Fuel Ratio at WOT get a Wideband.

I have alot of other stuff to do with that car like clutch, exhaust manifold, wastegate etc. before I can buy a wideband but I will eventually.

I'm going to try -20 across the board for a log later and see what that does to the timing etc.

Is it correct for my timing to drop like that from me adding fuel though? (Comparing my 1st 2 logs to the 3rd?) Sorry i'm fairly n00b when it comes to this stuff

Thanks so much for the help so far it is GREATLY apretiated!
-Frank