Can someone please give me advice on why my injector duty is so high and also my AF seems high even with lots of fuel?
Attached calibration and data log.
Injector duty high
Injector duty high
- Attachments
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- Data Logs chris 1.rar
- (215.17 KiB) Downloaded 276 times
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- map chris 1.rar
- (17.42 KiB) Downloaded 258 times
I just want to comment here since I've been helping him look at the tune.
He has a basically stock FN2 (injen CAI and cat delete) running an FD2 ECU.
If you look at the datalogs (for instance 3.fpdl), 2nd gear the a/f is sparatic and goes really rich. Third gear flat lines and is almost a straight line (in fact from a datalog he showed me last night, 3rd gear was supposedly at 14.0:1 a/f, but this datalog now shows 13.2), 4th gear goes even leaner.
Apparently he has already added 20% fuel to the map because the O2 was reading even leaner..
I'm suspecting there's either an exhaust leak (maybe?), faulty primary O2 sensor, or an injector sticking/clogged? But either way, a 93-94% injector duty cycle on a basically stock FN2 is not something I'd expect to see...
He has a basically stock FN2 (injen CAI and cat delete) running an FD2 ECU.
If you look at the datalogs (for instance 3.fpdl), 2nd gear the a/f is sparatic and goes really rich. Third gear flat lines and is almost a straight line (in fact from a datalog he showed me last night, 3rd gear was supposedly at 14.0:1 a/f, but this datalog now shows 13.2), 4th gear goes even leaner.
Apparently he has already added 20% fuel to the map because the O2 was reading even leaner..
I'm suspecting there's either an exhaust leak (maybe?), faulty primary O2 sensor, or an injector sticking/clogged? But either way, a 93-94% injector duty cycle on a basically stock FN2 is not something I'd expect to see...