Please check out my log?

[Killa_dsm]

Well I log this tonight, running about 14psi on my big16g.

Rpms: 2100 O2: 0.18 TPS: 81 Timing 25 MPH: 29
Rpms: 2204 O2: 0.94 TPS: 96 Timing 20 MPH: 31
Rpms: 2444 O2: 0.96 TPS: 96 Timing 14 MPH: 32
Rpms: 2704 O2: 0.96 TPS: 96 Timing 10 MPH: 37
Rpms: 3000 O2: 0.97 TPS: 96 Timing 9 MPH: 40
Rpms: 3336 O2: 0.97 TPS: 96 Timing 9 MPH: 43
Rpms: 3660 O2: 0.97 TPS: 96 Timing 10 MPH: 47
Rpms: 3952 O2: 0.97 TPS: 96 Timing 12 MPH: 54
Rpms: 4252 O2: 0.97 TPS: 96 Timing 12 MPH: 58
Rpms: 4496 O2: 1.0 TPS: 96 Timing 12 MPH: 58
Rpms: 4752 O2: 0.97 TPS: 96 Timing 12 MPH: 62
Rpms: 4952 O2: 0.97 TPS: 96 Timing 13 MPH: 65
Rpms: 5180 O2: 0.97 TPS: 96 Timing 11 MPH: 68
Rpms: 5408 O2: 0.97 TPS: 96 Timing 13 MPH: 72
Rpms: 5604 O2: 0.96 TPS: 96 Timing 14 MPH: 76
Rpms: 5808 O2: 0.96 TPS: 96 Timing 15 MPH: 79
Rpms: 5980 O2: 0.96 TPS: 96 Timing 16 MPH: 81
Rpms: 6172 O2: 0.96 TPS: 0 Timing 17 MPH: 85

Thanks

 

[grizzly]

at about 4500 looks like ## a tad rich wanna just keep it in the .94 and up
and at about 5100 looks like knock


(i am still new to tuning so by all means correct me if i am wrong)

 

[spyderturbo007]

Using the stock O2 sensor is pretty much worthless when it comes to tuning, so you can really ignore that.

To the original poster:

Try this: Make another pull logging timing, O2 voltage, airflow and rpm only.

Then make another pull after turning up the boost 2psi.

Post those 2 logs up and we'll go from there.

 

[kraka]

^^^agreed...Good luck trying to tune a car based on MPH..

But at least from this log it looks to be retarding close to 2* of timing at 5000-5200, indicating some slight knock it would seem...if you had an safc I would try to add a little fuel at the 5k range, but another log at higher rpm would help...14psi on a b16g will not be doing much (hopefully you got fuel mods)


BTW: Spyderturbo007, I am perfectly aware that the stock narrowband 02 is not very accurate, but then please respond to why you would ask him to log 02v again??

 

[Killa_dsm]

Ok thanks for you guys help. I just got a S-AFC installed, so I will do another pull on Wednesday when I get home and I will post it up.

and to kraka: yes I have a vr4 fuel pump and will be getting 650's pretty soon.

 

[CanadianTSi]

I agree with Spyder, looks like you have room to turn up the boost a couple psi.

 

[spyderturbo007]

but then please respond to why you would ask him to log 02v again??

Looking at O2 voltage makes for a "partially useable estimate" of how the car is running.

I use it as a generalization for the AFR, mostly as an overall pattern. For example, if he turns up the boost 2psi and I see that the O2 voltage drops to 0.85V, I know there is something not right.

So, other than using it as a generalization, I pretty much disregard the value when tuning and place my attention on airflow and timing.

 

[Killa_dsm]

Well I got to do another pull tonight. Here it is:
Log: Big16g, 15psi

Rpms: 2652 Hz:7.260 O2: 0.94 Timing 19
Rpms: 2848 Hz:9.490 O2: 0.96 Timing 13
Rpms: 3044 Hz:12.40 O2: 0.96 Timing 9
Rpms: 3296 Hz:16.23 O2: 0.97 Timing 7
Rpms: 3576 Hz:17.29 O2: 0.97 Timing 7
Rpms: 3864 Hz:18.80 O2: 0.97 Timing 8
Rpms: 4176 Hz:19.99 O2: 0.97 Timing 9
Rpms: 4468 Hz:21.69 O2: 0.97 Timing 9
Rpms: 4720 Hz:23.22 O2: 0.97 Timing 10
Rpms: 5016 Hz:24.17 O2: 0.97 Timing 11
Rpms: 5280 Hz:25.46 O2: 0.97 Timing 9
Rpms: 5556 Hz:26.26 O2: 0.96 Timing 10
Rpms: 5780 Hz:26.69 O2: 0.96 Timing 10
Rpms: 6008 Hz:27.06 O2: 0.96 Timing 12
Rpms: 6220 Hz:27.76 O2: 0.96 Timing 13

I'm still learning about how to look at logs and everything but, at 5280 I'm knocking alittle right? Thanks for your help!

 

[CanadianTSi]

That log is not so good.

Had you been pushing the car at all before that pull? Maybe your stock IC was heatsoaked.

 

[Killa_dsm]

That log is not so good.

Had you been pushing the car at all before that pull? Maybe your stock IC was heatsoaked.

Yeah I did push the car hard before hand. I had another pull before this which may have caused the intercooler to heatsoak. But that log didnt come out nicely so I did another pull. Well I will try to get another log up tomorrow!

Thanks