Fuel System Running Rich code P0172

[dchris4]

The car is running rich. The MAF table needs to be adjusted. Ideally when you change the intake you should switch it to run on speed density.

-Ed

Thank you for your help!! Running off speed density is using the MAP sensor instead of the MAF correct? Sorry I’m a noob when it comes to this stuff.

Yes that is correct. You would be running on the MAP sensor and not the MAF. You would then have to dial in all the fuel tables.

-Ed

Hey!

I don’t wanna mess around too much with the tuning, but I do want to fix my issue. Looking at the fuel low table it seems there are a lot of inconsistencies. Should I be attempting to smooth out the graph while still keeping the same shape of the line? Or should I just trim 5% from the overall fuel.

Thank you!

[CalibratEd]

Post the updated calibration file and a datalog. I can look over it and better assist you.

-Ed

[dchris4]

Post the updated calibration file and a datalog. I can look over it and better assist you.

-Ed

datalog0005.fpdl

Factory Setting MAP Tune.fpcal

After changing it to speed density my car definitlely runs different. On startup it seems like the engine wants to cut out a little bit, but then after a few seconds it runs normally. Engine braking seems a lot smoother though. Thank you again for your help, I really appreciate it.

-Daniel

[dchris4]

Post the updated calibration file and a datalog. I can look over it and better assist you.

-Ed

I should add that when I started the car warm after going to the store, it started right up but then stalled out on me after a few seconds. Not sure if it’s a cranking fuel trim problem or what. I started it up again and gave it a bit of gas then it normalized, but without giving it some gas it’ll stall.

[CalibratEd]

The car is running rich. I mad some broad fuel changes to lean it out a bit.

Create another normal drive log.

- Ed

[dchris4]

The car is running rich. I mad some broad fuel changes to lean it out a bit.

Create another normal drive log.

- Ed

datalog0006.fpdl

[CalibratEd]

I reduced the fuel a bit more. Create another log.

- Ed

[dchris4]

I reduced the fuel a bit more. Create another log.

- Ed

datalog0007.fpdl

[CalibratEd]

I overshot the fuel changes a bit. Create another normal drive datalog.

- Ed

[dchris4]

I overshot the fuel changes a bit. Create another normal drive datalog.

- Ed

datalog0008.fpdl

[CalibratEd]

Fueling looks better. Create another log.

-Ed

[dchris4]

Fueling looks better. Create another log.

-Ed

datalog0009.fpdl

When the car would slow down to around 20kmh in neutral, a couple times it wanted to stall then it would rev up to around 1400 on its own to keep it from stalling. Not too sure what would cause this.

[dchris4]

Fueling looks better. Create another log.

-Ed

Sorry, ignore my last comment it stopped doing it. The car is running a lot better.

[dchris4]

Fueling looks better. Create another log.

-Ed

Hey,

Thank you for all of your time Ed, I really appreciate it!

[CalibratEd]

Fueling looks better. Create another log.

-Ed

Hey,

Thank you for all of your time Ed, I really appreciate it!

Thanks for the appreciation. I apologize for the delayed response. I will review the file when I get a chance.

-Ed