Target Timing and Knock Feedback
Target Timing and Knock Feedback Mod List:
99 LS1 from a vette (return style) in a S10. Have a Zex single fogger kit running a 100 shot with a window switch (3K-6K rpm), BR7EF Plugs at 0.032 gap, 1 5/8 shorties, full exhaust, LS6 manifold, ported TB, 4 inch intake, and a rock solid tune via wideband.
N/A it is solid 12.6-12.8 AFR and running ~28-30 deg total timing (advanced over stock). With nitrous I am around 12:1 AFR (900psi bottle pressure) and (0.024 fuel and 0.046 nitrous).
Questions:
1. What kind of total timing under spray are you guys running with a setup like this. I am using a homemade timing tuner that reads a potentiometer rather than the IAT when I arm the nitrous. I can adjust from 0-10 degrees retard. To be safe im pulling 10 deg right now.
2. Should I be using the STOCK knock sensor parameters (knock sensitivy, KR magnitude, ect.)?
3. Is the factory KR feedback a good way to slowly advance timing until I see a small amount, and then pull it back out? Or is it too late at this point?
Thanks
99 LS1 from a vette (return style) in a S10. Have a Zex single fogger kit running a 100 shot with a window switch (3K-6K rpm), BR7EF Plugs at 0.032 gap, 1 5/8 shorties, full exhaust, LS6 manifold, ported TB, 4 inch intake, and a rock solid tune via wideband.
N/A it is solid 12.6-12.8 AFR and running ~28-30 deg total timing (advanced over stock). With nitrous I am around 12:1 AFR (900psi bottle pressure) and (0.024 fuel and 0.046 nitrous).
Questions:
1. What kind of total timing under spray are you guys running with a setup like this. I am using a homemade timing tuner that reads a potentiometer rather than the IAT when I arm the nitrous. I can adjust from 0-10 degrees retard. To be safe im pulling 10 deg right now.
2. Should I be using the STOCK knock sensor parameters (knock sensitivy, KR magnitude, ect.)?
3. Is the factory KR feedback a good way to slowly advance timing until I see a small amount, and then pull it back out? Or is it too late at this point?
Thanks
Last edited by roastin240; Sep 17, 2014 at 11:41 AM.
Also I anticipated not just ignition retard, but fuel enrichment at higher "simulated IAT" that I acheived with the potentiometer trick. I cannot seem to find these tables in HPTuners that have a fuel enrichment with respect to IAT. Can someone point me in the right direction? because I am running a much smaller fuel jet than recommended for the nitrous jet, so I suspect that my stock injectors are adding additional fuel. I need to watch injector duty cycle in HPTuners to verify though.
