New log guys.It's getting better

tbonitz301 · 05-14-2008, 05:23 PM

Here it is. Much better if you ask me.I really believe that knock is phantom knock, but ill let you guys be the judge. Am i leaning out on the topend or what.That dont look to good.What can i do? I'm not worried about my idc's

1992awdlaser · 05-14-2008, 05:44 PM

Is this still at 15psi? I am guessing you didn't do your idle tuning since the airflow tables are zeroed out? Take a look at this if you have not done idle tuning. http://www.jeffgst.com/gmafcalibration2.html

tbonitz301 · 05-14-2008, 05:52 PM

Yep still at 15psi. I checked out the jeffgst site earlier, but i didnt really understand it to well.

90laserRSfwd · 05-14-2008, 06:05 PM

If you'd be willing to come to PA I could help you tune the car. I have a wideband and laptop. You'd just need to bring your DSMLink cable. I have downloaded the newest update from Link already, v2.5.2.26 as of 4-19-2008. Let me know via PM. And what do you mean worried about injector duty cycle? I ran my e316g @ 22 psi with the stock 450's and 123% injector duty cycle once, nothing wrong with my car. I think your knock may be phantom knock also. Make sure your knock sensor is tight.

1992awdlaser · 05-14-2008, 06:06 PM

First you need to log ltft lo, ltft mid, and stft. Have dsmlink running and rev till mafraw reads 50hz. You can either post a log of that or do the following.

At the 50hz point add ltft lo to the stft. Then change the 50 hz slider in the airflow table by whatever percentage you get from adding the ltft lo and the stft.

tbonitz301 · 05-14-2008, 06:10 PM

Ok guys. I might be starting to figure this out now, but we will see.Ok i came up with a 7% correction factor for the maf compensation. (15+14.7)/(13+14.7)-1
(29.7/27.7)-1=.0722 = 7% I think

Could someone please check my homework

1992awdlaser · 05-14-2008, 06:13 PM

Yes 7% would be correct for that.

tbonitz301 · 05-14-2008, 06:23 PM

Did you check the mafraw and boostest at 5000-5500rpm's or are you just saying my math is correct.

tbonitz301 · 05-14-2008, 06:52 PM

Here is the 50hz log. What do you guys think? Thanks for all the help im learning alot, and i like it

1992awdlaser · 05-14-2008, 06:54 PM

Quote:

Originally Posted by tbonitz301

Did you check the mafraw and boostest at 5000-5500rpm's or are you just saying my math is correct.

I checked it in the log.

Quote:

Originally Posted by tbonitz301

Here is the 50hz log. What do you guys think? Thanks for all the help im learning alot, and i like it

Where is it?

tbonitz301 · 05-14-2008, 07:00 PM

Cool. I really appreciate the help man. Here's that link for the hz log.Just to be completely sure. I need to add 7% to the 1400hz airflow slider, and then taper off the rest off the slider's

1992awdlaser · 05-14-2008, 07:06 PM

I would add 2% to the 50hz slider. Now you need a log revving to 150hz.

tbonitz301 · 05-14-2008, 07:13 PM

Man as much as i'd love to keep these logs coming. I dont think i should do the 150hz right now. My neighbors will have there shotgun out

. Tommorrow for sure.

1992awdlaser · 05-14-2008, 07:17 PM

Quote:

Originally Posted by tbonitz301

Man as much as i'd love to keep these logs coming. I dont think i should do the 150hz right now. My neighbors will have there shotgun out

. Tommorrow for sure.

. I will check it out tomorrow. Just make sure the car is warmed back up.

tbonitz301 · 05-14-2008, 07:21 PM

Cool. Your the man

tbonitz301 · 05-15-2008, 04:20 PM

Here is the 150Hz log

1992awdlaser · 05-15-2008, 04:56 PM

I would go 3 degrees negative on the 150hz slider.

tbonitz301 · 05-15-2008, 05:01 PM

You mean percent?

1992awdlaser · 05-15-2008, 05:02 PM

Quote:

Originally Posted by tbonitz301

You mean percent?

Yeah. I don't know why I said degrees.

tbonitz301 · 05-15-2008, 05:04 PM

Alrighty. Should i do a pull or whats next? Sorry im completely new at this, but i have already learned alot. What told you that i should go -3% on the 150 slider?Would i just add the ltft mid to the stft?

snowborder714 · 05-15-2008, 05:12 PM

Quote:

Originally Posted by tbonitz301

Alrighty. Should i do a pull or whats next? Sorry im completely new at this, but i have already learned alot. What told you that i should go -3% on the 150 slider?Would i just add the ltft mid to the stft?

If you look at your STFT's, you'll see it's bouncing around -3% which means you should subtract that % air from the 150Hz slider.

This link will help you understand what you're doing with idle and rev tuning:
maftcalibrationbyloggedboost [ECMTuning - wiki]

Next you'll want to do the cruise tuning and then double check that idle, rev, and cruise are all good and then you can start WOT tuning.

I would also look into what's causing the constant 3 counts of knock.