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My First log, advice needed

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drewbird91

15+ Year Contributor
121
0
Nov 30, 2004
Milwaukee, Wisconsin
Here is the log I took this afternoon. Things to note, my profile should be up to date. I have 93 octane in there, it was hitting about 16-17psi or so. During this run my FTRL was 139.8%, FTRM was 82.0% and FTRH was 81.2% constant, none of the trims changed. TPS was at 99.6%. Also I have INJD on the logger which I think is injector duty (correct me if I'm wrong) at that was steadily climbing to 100% at the top end of third, where it hit 100.7%. If anyone can we what that's all about, am I maxing out my 680cc injectors? I also threw on my injp (injector pulse width) because at the upper end of third it was getting choppy/breaking up. I wasn't able to watch the egt gauge at all. If anyone has any advice on what to adjust let me know. I believe my afpr is set at stock setting, but I should check that. Also I have the ngk plugs, one range colder. Anything else needed just ask.http://www.cardomain.com/ride/470873/1

ERPM KNCK TIMA O2- INJP

2nd gear pull
4375.00rpm 0 36.00º 0.74V 1.28ms
3406.25rpm 0 41.00º 0.70V 1.28ms
3250.00rpm 0 39.00º 0.88V 3.07ms
3250.00rpm 0 37.00º 0.82V 3.58ms
3406.25rpm 0 36.00º 0.25V 3.84ms
3593.75rpm 0 36.00º 0.57V 3.58ms
3750.00rpm 0 37.00º 0.27V 3.33ms
3875.00rpm 0 36.00º 0.29V 3.58ms
4093.75rpm 1 36.00º 0.29V 4.10ms
4281.25rpm 0 36.00º 0.90V 3.58ms
4375.00rpm 0 40.00º 0.90V 3.33ms
4468.75rpm 0 40.00º 0.90V 3.33ms
4531.25rpm 0 40.00º 0.88V 3.07ms
4750.00rpm 0 41.00º 0.88V 5.63ms
5000.00rpm 0 31.00º 0.90V 8.45ms
5343.75rpm 0 28.00º 0.92V 12.03ms
6000.00rpm 1 28.00º 0.92V 16.13ms
5687.50rpm 0 24.00º 0.92V 1.54ms

Shift to third

4468.75rpm 0 45.00º 0.57V 1.28ms
3468.75rpm 0 42.00º 0.66V 1.28ms
3437.50rpm 0 39.00º 0.78V 1.28ms
4000.00rpm 0 41.00º 0.80V 1.28ms
3968.75rpm 0 41.00º 0.72V 1.28ms
3968.75rpm 0 41.00º 0.64V 1.28ms
3906.25rpm 0 41.00º 0.84V 1.28ms
3843.75rpm 0 41.00º 0.45V 1.28ms
3843.75rpm 0 41.00º 0.86V 1.54ms
3843.75rpm 0 41.00º 0.25V 1.79ms
3812.50rpm 0 41.00º 0.78V 2.05ms
3843.75rpm 0 40.00º 0.76V 2.05ms
3875.00rpm 0 40.00º 0.72V 2.05ms
3875.00rpm 0 40.00º 0.78V 2.30ms
3937.50rpm 0 40.00º 0.06V 5.89ms
4093.75rpm 0 31.00º 0.90V 7.17ms
4281.25rpm 0 28.00º 0.90V 8.96ms
4468.75rpm 0 28.00º 0.92V 10.75ms
4687.50rpm 0 26.00º 0.92V 12.54ms
4968.75rpm 0 25.00º 0.92V 14.59ms
5218.75rpm 0 22.00º 0.92V 16.13ms
5437.50rpm 0 22.00º 0.94V 17.41ms
5656.25rpm 0 22.00º 0.94V 18.18ms
5812.50rpm 0 23.00º 0.92V 18.43ms
6187.50rpm 0 24.00º 0.92V 18.18ms
6218.75rpm 0 23.00º 0.92V 17.92ms
6468.75rpm 0 22.00º 0.92V 17.92ms
6656.25rpm 0 20.00º 0.92V 17.92ms
6718.75rpm 0 20.00º 0.92V 17.66ms
6937.50rpm 0 19.00º 0.92V 17.41ms
 
Looks to me like you have some room to turn up the boost. I would try and go up 1psi at a time and log it each time until your timing comes down to 18* or you start getting knock. I would also turn up your base fuel pressure that should help with your duty cycle. Most aftermarket fuel injectors flow rates are tested at 42.3psi fuel pressure.
 
LORD HAVE MERCY FOR THE TIMMIN ADVANCE....u should really try to level out ur fuel trims to 100 this could help on ur high timmmin..
ur timming advance is okay around 5700 on but before that its way off
 
looks like you floor it at 4k rpms. Do another 3rd gear pull starting at 2k rpms and floor it until redline. itl give people a better idea of what your timing curve looks like and whats going on.
 
Thanks for the replies. Since my FTRM and FTRH are around 81% and my car seems to be rich at top end, I should then lean out those 2 areas, correct? Also since my FTRL is 139% I should richen it up at the low setting? Or is it the other way around? I will also check and turn up the fuel pressure. Also what is my 02 value suppose to be at? Any help or direction is appreciated. I'm already learning alot from my first log.
 
Here's another log, I turned the fuel pressure up to 46 psi with the vacuum hose off. I also leaned out mid and wot on the translator by 5% each. I also forgot to mention that I have a new knock sensor and a newer o2 sensor (even though its probably not relavant). I think I need to get those fuel trims right (they were still the same FTRL 139%, FTRM 82% FTRH 81%). I'm wondering if I should redo the base set-up and work from there. Or can I just continue to adjust from here? (see previous post) Any suggestions are helpful. I was thinking about taking my car to a dyno but I want to get it in the ballpark (tuning wise) first so I don't waste my time there.
I am a little reluctant to turn the boost up right away because I thought it was wiser to tune at a lower setting then work your way up higher and higher, but I can see that I have too much fuel at top end. Your input is very appreciated. Thanks


ERPM KNCK TIMA O2-R INJP
1843.75rpm 0 25.00º 0.92V 6.14ms
1968.75rpm 0 25.00º 0.92V 6.14ms
2062.50rpm 0 25.00º 0.94V 6.14ms
2187.50rpm 0 26.00º 0.92V 6.14ms
2312.50rpm 0 26.00º 0.92V 6.40ms
2437.50rpm 0 27.00º 0.94V 6.40ms
2562.50rpm 0 28.00º 0.94V 6.66ms
2718.75rpm 0 28.00º 0.94V 6.66ms
2875.00rpm 0 28.00º 0.92V 6.66ms
3031.25rpm 1 29.00º 0.92V 7.17ms
3156.25rpm 0 28.00º 0.92V 7.17ms
3312.50rpm 0 29.00º 0.92V 7.17ms
3468.75rpm 0 28.00º 0.92V 7.42ms
3625.00rpm 0 28.00º 0.90V 7.68ms
3781.25rpm 0 27.00º 0.90V 8.19ms
3968.75rpm 0 27.00º 0.90V 8.96ms
4187.50rpm 0 26.00º 0.92V 10.24ms
4375.00rpm 0 25.00º 0.92V 12.03ms
4625.00rpm 0 25.00º 0.92V 13.06ms
4843.75rpm 0 24.00º 0.92V 15.36ms
5062.50rpm 0 21.00º 0.94V 16.90ms
5281.25rpm 0 20.00º 0.94V 17.92ms
5562.50rpm 0 21.00º 0.94V 18.94ms
5593.75rpm 0 22.00º 0.92V 18.69ms
5875.00rpm 0 23.00º 0.92V 18.18ms
5968.75rpm 0 23.00º 0.92V 18.18ms
6125.00rpm 0 23.00º 0.92V 18.69ms
6312.50rpm 0 23.00º 0.92V 18.94ms
6281.25rpm 0 22.00º 0.92V 17.41ms
6375.00rpm 0 21.00º 0.92V 17.15ms
6593.75rpm 0 21.00º 0.92V 5.12ms
 
Those numbers look much better... Do you notice a difference? Is that whole log at wide open throttle from 2000 rpm's up?
 
That log looks much better than your first and i think your timing advance is in good range considering your not seeing any knocks. It looks like your didnt WOT until 4k on your first log which would explain for your screwy numbers. As long as that last pull felt good and u didnt hit fuel cut i would turn up the boost just a bit and lean some areas out as much as u can looking at knocks and egts throughout. You should be able to correct those fuel trims by free reving the engine. I've found that mid and high trims are more difficult to do but low trim you can definetly get done by letting the car idle and slowly riching it up until it starts fluctuating around 100%. Nice car and goodluck fine tuning
 
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