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Need help with logging data....plz

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mhockeyjock

20+ Year Contributor
77
0
Nov 15, 2002
Orlando, Florida
Hey guy,

I logged from a 3rd gear pull. Now what, not sure what to do b/c this is my first log. Please let me know what to do tunning wise as I ave an AFCII. Anything helps.... I'm on 450's and 15lbs of boost. Thanx.... :talon:

Mark


RPM Injp Knck TPS TIMA

2875 5.88ms 37 33.2% 20
3000 9.47ms 36 62.8% 17
3187 16.12ms 35 93.7% 6
3312 16.12ms 34 93.7% 2
3593 15.87ms 33 88.2% 3
3718 16.12ms 32 88.2% 3
3906 15.87ms 32 88.2% 4
4125 16.12ms 31 88.2% 6
4250 16.89ms 32 88.2% 6
4468 16.89ms 31 88.6% 6
4687 17.15ms 30 88.6% 6
4843 17.15ms 29 88.6% 6
5062 17.40ms 29 88.2% 7
5125 17.15ms 28 87.8% 8
5281 16.89ms 29 86.3% 10
5468 16.89ms 28 86.3% 10
5593 16.89ms 27 85.9% 11
5718 16.38ms 27 85.9% 11
5812 16.38ms 27 85.9% 13
5937 16.38ms 26 86.3% 14
6125 16.38ms 26 88.6% 14
6187 16.12ms 25 91.7% 15
6250 15.87ms 24 93.7% 13
6437 16.12ms 24 94.1% 13
6500 15.87ms 23 96.0% 12
6593 15.61ms 22 96.0% 12
6781 15.61ms 21 95.3% 11
 
Leave the settings at zero. As long as your still on stock inj.'s nothing needs adjusting.
Log again; RPM'S, TPS, timing, and knock.
Find an open road, third gear, from 2500 RPM floor it. WOT to redline. See what you get.
Your fuel pressure is set correctly, right?
 
I don't know about 1g logs, but timing looks a little low around 3300 rpms. You might want to richen it up there, and a little more top end. I tuned my 2g so timing starts from 8 and curves upwards.

As far as needing an AFC with stock injectors, all DSMs run rich from the factory, particularly 1gs. If you know how to tune and keep your eyes glued to timing and knock, you can squeak more performance out of your car by tweaking the fuel curve a bit. Just be careful not to go too lean.
 
cfisher said:
38psi on 1g. 43psi on 2g.


I was just gonna say that. It's 38psi on 1g with line off.

Check your timing, that's a lot of knock and your TPS is not even opened up all the way during any of the pull.....don't be scared of it, put it to the floor.

When you have raised fuel pressure like you did at 43, it lowers your pump flow.

Lower the fuel pressure, re-shoot the base timing to 5* BTDC and then go try again, this time make sure you are pushing the pedal all the way to the floor.

You might want to go a little richer across the board just to be on the safe side.

Post the new log on here.
 
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