Terrible timing on 2g log

[spoold]

Ok my setup is e316g, evo 8 560's, walboro 190 (it might be a 255) and pretty much all bolt on supporting mods.

This log looks terrible, im going to go run another one, but they all share teh same probelms, and taht is that they NEVER rise to 16 timing advance? I cant get more than 12-13 advance at redline? Is my base timing incorrect? Any other advice?



Ok new run! I changed nothing, just logged a few more rpm's

rpm o2v rpm
2508 .89 23
2600 .93 20
2680 .91 18
2780 .93 16
2880 .93 14
3016 .95 12
3132 .97 11
3284 .97 10
3428 .97 9
2580 1.0 9
3740 1.0 10
3932 .97 10
4096 .97 10
4264 .97 10
4456 .97 10
4620 1.0 10
4780 .97 11
4948 .97 11
5112 .97 11
5280 .97 12
5452 .97 13
5612 .97 16
5788 .97 17
5944 .97 17
6112 .95 18
6336 .95 17
6432 .95 16
6564 .95 19

[GVR4592]

It looks like it's knocking a bit. What are your Safc settings at and how much boost was that run?

[spoold]

My safc is set to -15% across the board (i am JUST starting to tune, and im still new to tuning)

Anyone know why my timing at redline is 19???

Do "bumps" up in timing indicate knock as well? or do i only add fuel when timing takes a dip?

[yangtech]

it doesn't look lean like the log you had before.

[spoold]

Id like to tune it for 15 psi and then turn the boost up to 17-18, but should i just turn it up to 17-18 (what ill be running day to day) and tune from there? I was told it was easier to tune it a few psi under what you want to run?

[olmytsi]

Get it sorted out at 15 psi and then turn it up.

[eclipsegsx1736]

I don't see much wrong with that log, except a little knock ~6500 rpm. You're getting around 19 degrees and it may be even higher if you went to redline. You may try adding +1 on the SAFC around the 6000-6500 range if other logs continue this same trend.

You want the timing to dip down when the boost comes on, and steadily increase from there up to redline. Yours does just that, except for aroun 6500. 2g's seem to be a little flat until around 5000 rpm, as is yours.

[CanadianTSi]

Your rich from 3k-6k take out some fuel there.

Everything else looks fine.

[spyderturbo007]

CanadianTSi is correct. Or you could just turn up the boost a couple of psi and add a percent above 6k.

Just make sure that you take a look at your corrected peak airflow at your current boost and at the new boost level. That way you can make sure that your increase in pressured resulted in an appropriate volume increase. No sense running your turbo harder if you aren't increasing the flow proportionally.

[scottsee]

Adding onto what spyderturbo007 has said, I don't know if pocket loggers can see g/rev airflow but incase yours does I would strongly suggest adding it to your values list. g/rev is what will let you know which of the 12 timing and fuel enrichment maps your are on takes the guess work out of "why is my timing so low/high".

[spoold]

it can lock airflow, if thats what you are meaning? im going to do another pull tomorow at 17 psi, which is the most i really care to run on the car for my goals. Ill post up!

[spyderturbo007]

You can only log airflow in lbs/min, but using the SAFC-II correction corresponding to the highest airflow value, along with the rpm @ that point, you can calculate g/rev.

But I just wanted him to make sure that he was getting a proportional airflow increase corresponding to the boost increase. No sense upping the boost 3 psi, when you only get .5 lbs/min more flow.

[Mitsu_Racing]

Originally Posted by CanadianTSi

Your rich from 3k-6k take out some fuel there.

Everything else looks fine.

I thought on 2G's anything higher than 1.0 was rich?

[Ultimatedsm]

I remmeber that -15 across the board on the S-AFC is for 550's (base line). I bet on the 560's, your pushing slightly more fuel. If you have a walbro 255LPH, you should invent in a AFPR to make tuning a lot easier and more consistant. His 02 Voltage is indicating he is running rich. You can knock if your lean or too rich as well.