AFR Tuning - HELP
Thread Starter
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
AFR Tuning - HELP
Hi Guys,
I did my first 3rd gear pull this morning with my WB02 connected - any comments:
Personally I think it looks pretty lean up until 5500rpm... Is it worthwhile adding fuel from 3000-4000 rpm to get down to 12.0
mods: stock maps, 3" exhaust, EBC (19.5 PSI)
Cheers
David
I did my first 3rd gear pull this morning with my WB02 connected - any comments:
Code:
LogSec TPS RPM Timing Speed IPW IDC WB Knock Load2Byte 495.02 97 1968.75 17 34 5.888 9.7 14.5 0 100 495.20 100 2031.25 16 34 6.4 10.8 13.9 0 106.25 495.38 100 2125 16 34 6.656 11.8 13.4 0 111.875 495.55 100 2218.75 14 34 6.912 12.8 13.2 0 118.125 495.70 100 2281.25 14 38 7.168 13.6 13.1 0 123.125 495.88 100 2343.75 14 38 7.68 15.0 12.9 0 129.375 496.05 100 2437.5 11 38 7.936 16.1 13.0 0 137.8125 496.23 100 2531.25 11 38 8.704 18.4 13.1 0 149.0625 496.41 100 2656.25 9 44 9.728 21.5 13.0 0 161.875 496.56 100 2781.25 6 44 11.008 25.5 12.6 0 175.625 496.73 100 2875 5 44 12.288 29.4 12.5 0 197.1875 496.89 100 3000 3 44 14.592 36.5 12.5 0 218.4375 497.06 100 3125 0 54 15.872 41.3 12.7 0 241.25 497.23 100 3281.25 2 54 16.384 44.8 12.8 0 221.25 497.41 100 3437.5 3 54 15.616 44.7 12.7 2 219.375 497.56 100 3562.5 4 54 15.616 46.4 12.7 2 218.75 497.78 100 3718.75 5 62 16.128 50.0 12.5 2 226.25 497.95 100 3906.25 6 62 16.384 53.3 12.1 1 215.3125 498.14 100 4093.75 5 62 16.384 55.9 12.0 1 213.4375 498.31 100 4250 5 62 15.872 56.2 11.8 1 219.375 498.50 100 4406.25 5 74 15.872 58.3 11.8 1 213.4375 498.67 100 4562.5 5 74 15.616 59.4 11.8 0 218.75 498.83 100 4718.75 7 74 16.128 63.4 11.7 2 214.0625 499.00 100 4812.5 6 74 15.872 63.7 11.6 2 216.5625 499.17 100 4968.75 7 86 15.616 64.7 11.7 2 212.8125 499.34 100 5093.75 8 86 15.616 66.3 11.8 2 212.1875 499.50 100 5250 7 86 15.872 69.4 11.7 1 210.625 499.67 100 5406.25 8 86 15.872 71.5 11.4 1 210.9375 499.84 100 5531.25 8 96 16.384 75.5 11.4 1 213.125 500.02 100 5656.25 8 96 16.128 76.0 11.1 1 210.3125 500.17 100 5812.5 9 96 16.384 79.4 11.0 1 210.3125 500.36 100 5906.25 10 96 16.384 80.6 11.0 0 209.375 500.53 100 6062.5 12 106 15.872 80.2 11.0 2 206.25 500.70 100 6187.5 12 106 15.872 81.8 11.1 2 205 500.89 100 6312.5 11 106 15.616 82.1 11.0 2 204.375 501.06 100 6437.5 12 106 15.616 83.8 11.1 1 205.3125 501.23 100 6593.75 12 118 15.872 87.2 11.1 1 203.4375 501.41 100 6687.5 12 118 15.616 87.0 10.9 1 202.5 501.58 100 6812.5 14 118 15.616 88.7 10.8 1 202.5 501.73 100 6937.5 12 118 17.152 99.2 10.8 1 202.5 501.91 100 7031.25 14 118 16.64 97.5 10.4 0 201.5625 502.06 100 7125 14 124 16.64 98.8 10.4 0 198.75 502.23 100 7250 15 124 16.384 99.0 10.4 0 197.8125 502.41 30 7281.25 28 124 0.768 4.7 10.4 0 16.875
mods: stock maps, 3" exhaust, EBC (19.5 PSI)
Cheers
David
Last edited by tephra; Jul 25, 2007 at 09:04 PM.
looking at your load cells....isnt that a bit low? At 22lbs i am around the 240-250 load cells using both Evoscan & Mitsulogger...maybe these values seem skewed because he isnt at peak boost ...
Thread Starter
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
yep, thats what I thought, 2 quick questions:
1) are those numbers about what you would expect for an IX (with lean spool enabled) - I want to make sure the WBO2 is working properly
2) if I am not knocking at those lean rpm's is there any point in richening it up? I thought leaner was better... (up to a point..)
edit: I should mention i'm running about 19.5 PSI boost..
cheers
d.
1) are those numbers about what you would expect for an IX (with lean spool enabled) - I want to make sure the WBO2 is working properly
2) if I am not knocking at those lean rpm's is there any point in richening it up? I thought leaner was better... (up to a point..)
edit: I should mention i'm running about 19.5 PSI boost..
cheers
d.
Last edited by tephra; Jul 25, 2007 at 06:54 PM.
can you take a snapshot of your timing/fuel maps for us to see where your timing is supposed to be versus to where its at on the log...that can also help us analyze your log a bit better...
Trending Topics
I hope I don't start another wb war, but it does sound like different sensors will have different readings. thus, a reading is only as good as its consequences on your motor. (unless you do hundreds of readings on hundreds of cars to know where your readings lean.)
so that would imply you tune to what you can get away with and then back off a bit.
in your case you may or may not be on the edge of to something. the only way to know would be to go a bit farther to see what the impact is.
same would go for timing, once you have come to an understanding on your afr. then the process starts over as you tweak to see what works best.
however as pointed out in another thread, the consequences of a broad range of afr has a small impact on power. it is conceivable you could run any where from 11.0 to 11.7 and not gain enough power to notice it.(say a few hp). it becomes a matter of efficiency to the obsessed tuner to tune afr to the tenth.
still in order to know where you stand with your motor and your sensor it might be worth it to find the limit so you can back away from it. not something I would advise anyone with the knock filter mucked with.
one last bit, I would try not to go wot until you are closer to 3k. unless that is your normal driving style.
so that would imply you tune to what you can get away with and then back off a bit.
in your case you may or may not be on the edge of to something. the only way to know would be to go a bit farther to see what the impact is.
same would go for timing, once you have come to an understanding on your afr. then the process starts over as you tweak to see what works best.
however as pointed out in another thread, the consequences of a broad range of afr has a small impact on power. it is conceivable you could run any where from 11.0 to 11.7 and not gain enough power to notice it.(say a few hp). it becomes a matter of efficiency to the obsessed tuner to tune afr to the tenth.
still in order to know where you stand with your motor and your sensor it might be worth it to find the limit so you can back away from it. not something I would advise anyone with the knock filter mucked with.
one last bit, I would try not to go wot until you are closer to 3k. unless that is your normal driving style.
Thread Starter
Joined: Feb 2007
Posts: 9,486
Likes: 67
From: Melbourne, Australia
yup I noticed the IDC's, not sure how accurate that is... injector scaling might be off..
you guys say too lean, but if its NOT knocking then is there any point in adding fuel?
you guys say too lean, but if its NOT knocking then is there any point in adding fuel?
Right at 7000 rpm it gets real rich, even though the counts weren't high it was the duration that perhaps sent it to low octane map.
Also, doesn't look lean to me anywhere maybe a little to much time, but thats just me. The lean part is where your making the power, from 3500 - 5500rpm it takes 2.18 sec, but from 4000 -6000rpm your already down to 2.41 sec too rich and too much time up top
On the other hand, for only 19psi the car looks pretty danm strong if you ax me. What kind of fuel was that?
Also, doesn't look lean to me anywhere maybe a little to much time, but thats just me. The lean part is where your making the power, from 3500 - 5500rpm it takes 2.18 sec, but from 4000 -6000rpm your already down to 2.41 sec too rich and too much time up top
On the other hand, for only 19psi the car looks pretty danm strong if you ax me. What kind of fuel was that?
Last edited by C6C6CH3vo; Jul 26, 2007 at 05:08 AM.