Everyone, look at this log...

[whiteflash]

Just need some help with this log. Boost set at 14 creeping to 16. This is on a 14b, mods are in profile. Also under boost in third, it will sometimes blow smoke, but its not blue, kinda like a grey. Thanks for the help

EDIT: ive been searching up on the whitish/grey smoke under boost and I'm seeing alot about a blown headgasket. But the car pulls hard and boosts great, and its not clouds of smoke. You really have to watch for it to see it, cause it very faint.

 

[kenamond]

When posting logs, just paste the contents into the post with the column headings in place. Not everyone has Word, and it's just easier on us to see it right in the post.

 

[whiteflash]

Engine RPM Ignition timing advance
2476 33
2500 28
2593 21
2699 20
2832 18
2988 16
3160 13
3332 11
3546 10
3781 8
4027 9
4261 10
4519 10
4730 8
4980 10
5210 10
5449 9
5628 10
5828 11
6015 9
6082 36

 

[alex1090]

You can see starting at aroung 4000rpm it starts to pull timing. Which would indicate knocking. Thats all your gonna get out of that log you posted

 

[alex1090]

Its not pulling out a huge amount though. Doesnt look to be knocking to bad.

 

[kenamond]

Engine RPM Ignition timing advance
2476 33
2500 28
2593 21
2699 20
2832 18
2988 16
3160 13
3332 11
3546 10
3781 8
4027 9
4261 10
4519 10
4730 8
4980 10
5210 10
5449 9
5628 10
5828 11
6015 9
6082 36

Do you have more data for that log, post it, too. If not, next time you have a chance, also record your airflow and front O2 voltage (in addition to rpm and timing advance). If the sampling rate of your logger is kinda low, you might want to do two pulls: one with rpm, timing, O2v and the other with rpm, timing, and airflow.

It would also be helpful to know what your coolant temps and intake air temps were. You could check these just by watching them while you drive (doesn't have to be a 3rd gear pull). They don't change very fast, so you should be able to get a ballpark number for both that way.

If you don't have major airflow problems, then this looks like a lot of knock. But timing advance is not that simple. Knowing the other information will help a bunch.

 

[whiteflash]

thanks guys, i turned the boost way down.