Need a second opinion/look at cruise log....
Posted: Mon Aug 17, 2020 2:44 am
Hello everyone,
Here are my engine specs:
CA18DET (using Feature Pack 1)
800cc Deatschwerks low impedence injectors (currently set to 800us)
Z32 MAF Sensor (authentic)
HKS SSQV Recirculated BOV
So I have some questions about the current tune I am working on and was hoping someone could take a look at my .bin and log I have attached for any possible issues before I start going further along(log is at 2000 rpm, cruise, 3rd gear. Have only worked on idle and cruise so far).
1a) I noticed my engine will idle low when cold(650rpm and rich around 11.5), shouldn't the O2 closed loop kick in and raise the idle higher to warm the engine before it drops down to a reasonable idle?
1b) O2 sensor is reading when engine is cold but does not oscillate until warmed up, is this normal?
**Note: When the engine finally warms up it will idle around 650 to 800 rpm but the if I press the gas and leave it, it stalls. Also when warm it has 14.7 AFR.
2a) Figured I would get a decent amount of fluctuation in terms of AFR and short term trim(long term trim not showing, not available for CA18DET?), at cruise but are these values in the 14.7 AFR and 0% trim for cruise good or do I need to do adjust TIM more? Also for what its worth the cruise power band felt good.
2b) If the cruise tune looks good should I go back and readjust injector latency to acquire a better idle? If so should this most likely help with the stalling at idle or will it take more manipulation later on?
3) I do not have the neutral safety switch wired up, can this create issues with idle or does the idle switch on the TPS sensor handle all of that alone?
BTW, this is the setup I am running, I realize that the BOV is not recirculating back to the turbo, but it is away from the MAF is this setup ok? Also I boost tested to 25 PSI without any leaks.
I appreciate the help just want to make sure I am taking the right steps here.
Here are my engine specs:
CA18DET (using Feature Pack 1)
800cc Deatschwerks low impedence injectors (currently set to 800us)
Z32 MAF Sensor (authentic)
HKS SSQV Recirculated BOV
So I have some questions about the current tune I am working on and was hoping someone could take a look at my .bin and log I have attached for any possible issues before I start going further along(log is at 2000 rpm, cruise, 3rd gear. Have only worked on idle and cruise so far).
1a) I noticed my engine will idle low when cold(650rpm and rich around 11.5), shouldn't the O2 closed loop kick in and raise the idle higher to warm the engine before it drops down to a reasonable idle?
1b) O2 sensor is reading when engine is cold but does not oscillate until warmed up, is this normal?
**Note: When the engine finally warms up it will idle around 650 to 800 rpm but the if I press the gas and leave it, it stalls. Also when warm it has 14.7 AFR.
2a) Figured I would get a decent amount of fluctuation in terms of AFR and short term trim(long term trim not showing, not available for CA18DET?), at cruise but are these values in the 14.7 AFR and 0% trim for cruise good or do I need to do adjust TIM more? Also for what its worth the cruise power band felt good.
2b) If the cruise tune looks good should I go back and readjust injector latency to acquire a better idle? If so should this most likely help with the stalling at idle or will it take more manipulation later on?
3) I do not have the neutral safety switch wired up, can this create issues with idle or does the idle switch on the TPS sensor handle all of that alone?
BTW, this is the setup I am running, I realize that the BOV is not recirculating back to the turbo, but it is away from the MAF is this setup ok? Also I boost tested to 25 PSI without any leaks.
I appreciate the help just want to make sure I am taking the right steps here.