WS6FirebirdTA00

iTrader: (33)

well cat3 advised me to log my ftc and knock retard, i am in fuel trim cell 19 when i get knock and i thought that was idle. so im thinking im getting kr becuase my car is using timing in the idle tables thats high. let me knowplease, thanks

405HP_Z06

iTrader: (11)

Fuel Trim Group 1, Cells 0 - 3
• FTC 0 - 2 slight deceleration, little to no load
• FTC 3 low load, power enrichment
Fuel Trim Group 2, Cells 4 - 7
• FTC 4 low load, part throttle
• FTC 5 low load, part throttle
• FTC 6 moderate load, part throttle
• FTC 7 moderate load, part throttle, power enrichment
Fuel Trim Group 3, Cells 8 - 11
• FTC 8 - 10 moderate load, part throttle
• FTC 11 moderate load, part throttle, power enrichment
Fuel Trim Group 4, Cells 12 - 15
• FTC 12 - 14 higher load, power enrichment
• FTC 15 higher load, power enrichment, wide open throttle (EPA definition @ 100% Load)
Fuel Trim Group 5, Cells 16 - 19
• FTC 16, Automatic transmission in "Park" or "Neutral", hot idle, a/c on
• FTC 17, Automatic transmission in "Park" or "Neutral", hot idle, a/c off
• FTC 18 hot idle, a/c on (Manual or Automatic transmission in "Drive")
• FTC 19 hot idle, a/c off (Manual or Automatic transmission in "Drive")
Fuel Trim Group 6, Cells 20 - 22
• FTC 20 cold idle, a/c on or off
• FTC 21 moderate deceleration / no load
• FTC 22 higher load, power enrichment

WS6FirebirdTA00

iTrader: (33)

you are the man, thanks. so i guess i should decrease timing in the idle tables then in the areas i see it

405HP_Z06

iTrader: (11)

no problem! Sounds like you need to reduce timing in some idle cells.

WS6FirebirdTA00

iTrader: (33)

ok im helping someone that is getting FTC 22 when giving the car small amounts of gas and it should not be entering PE, map is under the threshold, have any idea about that?

jimmyblue

iTrader: (11)

I thought 22 was idle, but with EVAP purge active?

WS6FirebirdTA00

iTrader: (33)

405hp_z06, can you double check on that? the car should have been in an idle cell according to conditions

405HP_Z06

iTrader: (11)

22 and 15 are WOT. I looked at some logs I did with Car Code OBDII and I did see some single frames that showed FTC 22 at idle, but it was for far less than a second. I also checked some logs in HPT and didn't see FTC 22 once, only 20 during cold idle and then FTC 18 and 19.

Are you seeing this at hot idle, cold idle, or both?

WS6FirebirdTA00

iTrader: (33)

as far as i know hot idle and its right about the onset of some knock areas, which is why i asked