masters.....

i have a situation here. when i was doing air fuel logging on roads.. which is those legally roads in my country, i managed to log a beautiful air fuel ratio. on cruise i got around 14 to 15, and on boost high RPM.. i logged around 11.3 to 11.5. generally it was pretty beautiful air fuel.

but during my track event, i try to log some information out of it, i realise that majority of my map, the air fuel ratio is at 9. even from lower RPM WOT to higher RPM. all my fuel is around at 9 to 10 only. how come this is happening ?

the only difference i see in the environment is the temperature of the day. it was scorching heat. is it normal for the PFC to incease fuel that significant ? my normal days water temp is around 85 to 95.. on the hot days my PFC logged 110 and my water temp gauge logged 105. intake temp is around 80 on the day.

need someone to shed some lights.

thanks,

 

your air intake temp is 80C???? Is this while moving/

 

DL Settings 2:
"INJ vs Air temp and Boost(max)" and "INJ vs Water Temp and Boost(max)"

Plus your timing is retarded DL Settings 4:

"IGN vs Air & Water Temps".

 

i haven't check moving temp.. it was stable... but the day was freakin hot.... track temp hits 50 degrees celcius... air temp hits 40 degrees.... plus my twin infernos, stock IC, normal day hits 60, track day hits higher.

 

so.. it's actually a safety ? or i should try to adjust accordingly ?

 

It is a safety, but as they are ajustable, it is your decision if you want to change them a little.

 

okay got it...

last question.... i should just change the numbers to slightly lower than what it's written there right ?

how much is too much to change ? do we have a calculation table for it ? or a formula.

if it's written there 1.067 means 6.7% extra right ?


ooooo that's not 1 question. :P

 

okay i found something really wierd.. when i look through my logs... this is what i see...
my water temp did not went over what's specified in the DL settings 2, INJ vs etc etc etc

attached file is my track day record and my normaly road driving test log file... significant difference in air fuel... need some help here.

attached in this message is the track event logs...

below link is the logs i did before the track on normal roads normal temperature

http://www.kclmetal.com/Log_20070421_1224.zip

 

sorry.... the link is wrongly posted..here's the link. again.

http://www.kclmetal.com/Log_20070421_1224.zip

 

guys... i need help....
my DL settings defined that it'll be richen when above 115 degrees. but i did not see any part of my logs hit 115 at all.

please shed me some lights in this running rich mystery.

 

Look at your other settings in the DL that affect fuel injection. Also why don't you log information running around town and compare it to the track logs and see what's different between the two.

 

infact.. i did... my datalogs here http://www.kclmetal.com/Log_20070421_1224.zip is my around town logs... while the one attached above is my track logs.... you can see the difference... i've browsed through some other places of the DL settings.. can't find anything else.... but will look at it again...

at the moment just need someone to look into my settings or shed me some lights.

 

Hi, first off I am still learning the various quirks of the DL so take what I say with a grain of salt but this is what I see.

1. It is my understanding that the Inj vs airtT correction table is not aggressive enough (it doesn't take enough fuel out as temps rise and vice versa)

2. your fighting the Inj vs AirT vs max boost safety correction

3 your fighting the Inj vs waterT vs boost safety correction (a little)

It is my understanding that the PFC will interpolate the coorrection tables...IE as soon as you pass the min value of zero correction the PFC will interpolate the correction to the next data point.

Also your base map is all over the place...not that this is causing the over rich condition but its not very pretty...you have a ton peaks and valleys.

hope this helps

 

hi,

thanks for your input. i'm still learning as well therefore i'm asking alot of question.

1) i haven't do anything about the INj vs AirT section, yet my air T did not raise up to that level where it specified will increase the INJ..

2) i just turn down a little... by around 0.02.. only can try that next track session in a few months time.

3) just did a little as well.... by around 0.03

i got my O2 feedback off.... PFC will not do any changes to my map.

yes i know my base map is all over the place.. i just did a correction.... tonight will go for another test run if my fuel is enough for my application.... the reason it's flying everywhere is because i did alot of re-calc map whenever i found a few spot correction to get good air fuel...

did that by moving the map numbers horizontally sorting them... from low to high...

probably unable to simulate the richness i have on track on public roads... too dangerous and the roads are not hot enough to get that situation.

 

found the issue, i posted the same question to the Innovate forum... they mentioned is the wiring and grounding... because my LED sometimes blinks when i'm running as well...

i saw the issue once more which is on the road... my fuels were rich as hell all 8 to 10...

so... re-tightened my cables and making sure wires are not stressed.... and now i have my AFR reading back to normal