I've started to burn a few eproms and check the behavior of the PY unit.
I burned a chip and i added ignition timing (about 5-6 degrees) @ cruise loads, without adding fuel.
The afr was still 14.7-15 at part throttle, but i noticed that my fuel consumption has increased.
My question is why it has increased and afr stayed at the same numbers?
How are you measuring fuel consumption, average over a tank?
Have you had a timing light on it to be sure you've actually added advance?
@Yoof: Yes
@Andy: I haven't checked it, i'll do it, but it feels much better at cruise speeds
I have been wanting to do this on my gt to take full advantage of high octane fuel hope you get this sorted and maybe could help me :P
Why don't you try? Increase ignition step by step, always keep afr at safe numbers, go for a ride or get your gt to a dyno. You will understand a lot of things by seeing the dyno graph
I replied to your pm. Im just getting started with this I have downloaded tunerpro, winols and have an eprom read/writer + electronically erasable 27sf512 eproms in the post :)
Quote from: Andy on March 11, 2013, 10:47:17 PM
Have you had a timing light on it to be sure you've actually added advance?
Andy, yes it does.
I am unplugging the lamda sensor and i am emulating
Andy, how far can i go, tuning the ignition timing ,map and runing on stock motor, boost and 95oct fuel?
Can you give please an idea here?
0 13 27 40 53 67 80 93 107 120 133 147 160 173 187 200
6502 35.9 35.9 39.8 39.8 40.9 40.9 35.9 35.9 35.9 30.7 24.0 24.3 18.0 16.9 16.9 16.9
5901 35.9 35.9 40.9 40.9 40.9 38.7 35.9 35.9 37.0 31.0 25.7 25.0 18.4 18.0 18.0 18.0
5300 35.9 35.9 40.9 40.9 40.9 38.7 35.9 35.9 34.9 30.0 25.0 21.9 19.8 19.8 18.0 18.0
4701 35.9 35.9 40.9 40.9 40.9 37.0 35.9 32.8 30.0 28.9 22.9 20.8 19.8 19.8 18.0 18.0
4101 35.9 35.9 40.9 40.9 38.7 34.9 34.9 32.8 32.1 28.9 22.9 19.8 18.7 16.9 16.9 16.9
3501 31.0 31.0 35.9 34.9 32.8 27.8 26.8 25.0 27.8 30.0 22.9 18.7 16.9 14.8 14.8 14.8
2900 31.0 31.0 35.9 34.9 32.1 27.8 26.8 22.9 25.7 24.0 19.8 18.7 15.9 14.8 14.8 14.8
2500 27.8 27.8 27.8 27.8 27.8 25.7 25.7 20.8 22.9 24.0 18.7 18.0 15.9 15.9 15.9 15.9
2100 25.7 25.7 25.7 21.9 26.8 20.8 20.8 20.8 19.8 18.0 16.9 12.7 12.7 12.7 12.7 12.7
1700 21.9 21.9 21.9 21.9 24.0 20.8 18.0 15.9 19.8 15.9 12.0 12.0 12.0 12.0 12.0 12.0
1300 12.0 12.0 12.0 12.0 16.9 14.8 16.9 12.0 12.0 9.9 6.0 6.0 6.0 6.0 6.0 6.0
1100 3.9 3.9 3.9 3.9 7.8 14.8 11.0 6.8 12.0 8.9 6.0 6.0 6.0 6.0 6.0 6.0
900 1.8 1.8 1.8 1.8 6.0 9.9 15.9 12.7 9.9 3.9 3.9 3.9 3.9 3.9 3.9 3.9
700 6.0 6.0 6.0 6.0 6.0 11.0 11.0 7.8 7.8 3.9 3.9 3.9 3.9 3.9 3.9 3.9
500 6.0 6.0 6.0 6.0 6.0 11.0 11.0 7.8 7.8 3.9 3.9 3.9 3.9 3.9 3.9 3.9
300 6.0 6.0 6.0 6.0 6.0 11.0 11.0 7.8 7.8 3.9 3.9 3.9 3.9 3.9 3.9 3.9