At first, I must ask moderators: please do not merge this post with other looooong Boosterplug thread.
Because nobody would not read 300 posts --- I did not read it and basically I got fooled too.
Shortly - ECU adapts constantly and probably makes Boosterplug (or other alternative AIT foolers) useless.
When I first installed my Accelerator, I did feel difference. I don't know, was it real or was it just fantasy.
Anyway, in few days I went away, so I opened my 9T again and I added 3-position switch to it, so I can switch three positions --- standard, AIT thru Accelerator or AIT disconnected.
And I didn't feel any difference when I switched Accelerator on or off. Not even smallest difference at all (I did different switching, live and ignition off/on etc.)
Then I installed OBD2 reader GoPoint BT1A into OBD2 connector, so I see in real time:
1) Intake air temp, RPM etc.
2) Short Term Fuel Trim 1 and 2
3) Long Term Fuel Trim 1 and 2
Live switching engine running shows intake air temp:
1) standard: 30 C
2) thru Accelerator: 13 C
3) no AIT (wire open): -11C (minus eleven!)
In added screenshots @3500 rpm you see that Short Fuel Trim is around -3% "bigger" when Accelerator is switched on (intake air temp is 13C)
So ECU sees right away that mixture is too rich and its correcting it.
I tried it with different RPMs and pattern is similar.
I can't reset adaptions, but I will drive it few days without Accelerator, so I should see change in Long Fuel Trim. At moment its probably adapted with Accelerator, thats why I don't feel any difference.
I did some test runs today and seems that "too lean" is adapted fast to keep engine running without stalling and "too rich" is adapted slowly. I don't know logic of adaption, but sure thing is that it is adapting according to (narrow) O2 sensors.
I keep you posted...
PS. Its good post about this issue:
http://www.ninetowners.com/forum/engine-technical-discussion/60386-boosterplug-9t-discussion-opinions-23.html#post598185
Because nobody would not read 300 posts --- I did not read it and basically I got fooled too.
Shortly - ECU adapts constantly and probably makes Boosterplug (or other alternative AIT foolers) useless.
When I first installed my Accelerator, I did feel difference. I don't know, was it real or was it just fantasy.
Anyway, in few days I went away, so I opened my 9T again and I added 3-position switch to it, so I can switch three positions --- standard, AIT thru Accelerator or AIT disconnected.
And I didn't feel any difference when I switched Accelerator on or off. Not even smallest difference at all (I did different switching, live and ignition off/on etc.)
Then I installed OBD2 reader GoPoint BT1A into OBD2 connector, so I see in real time:
1) Intake air temp, RPM etc.
2) Short Term Fuel Trim 1 and 2
3) Long Term Fuel Trim 1 and 2
Live switching engine running shows intake air temp:
1) standard: 30 C
2) thru Accelerator: 13 C
3) no AIT (wire open): -11C (minus eleven!)
In added screenshots @3500 rpm you see that Short Fuel Trim is around -3% "bigger" when Accelerator is switched on (intake air temp is 13C)
So ECU sees right away that mixture is too rich and its correcting it.
I tried it with different RPMs and pattern is similar.
I can't reset adaptions, but I will drive it few days without Accelerator, so I should see change in Long Fuel Trim. At moment its probably adapted with Accelerator, thats why I don't feel any difference.
I did some test runs today and seems that "too lean" is adapted fast to keep engine running without stalling and "too rich" is adapted slowly. I don't know logic of adaption, but sure thing is that it is adapting according to (narrow) O2 sensors.
I keep you posted...
PS. Its good post about this issue:
http://www.ninetowners.com/forum/engine-technical-discussion/60386-boosterplug-9t-discussion-opinions-23.html#post598185