2015 Civic Si

[ViCC]

Hello all,

I am new to this forum and hondata flashpro as well. I don't have much on my car besides an NVidia N1 Catback exhaust. I recently installed an Acuity Curl-Control CAI. The car runs completely different now, and I could use some help and guidance to get it running properly again until I get a proper etune or dyno tune with some additional mods.

The cal I'm using is one I found on one of the threads that matched my mods and car.

I appreciate it in advance. I've included the datalog here!

[CalibratEd]

Welcome to the forum,

The car needs some fuel adjustments but its not that far off. You need to reduce the timing as you have upwards of 50 counts of knock. A lot of the knock is on the 15 degree non vtec vtc table.

-Ed

[ViCC]

Thanks Ed!

A few questions for you so I understand this well... when you say I have to reduce timing, is that done in the cam angle low & high or somewhere else? If so, to reduce timing, do I decrease or increase the values within the cells of the cam angles where knock is present?

As for fuel adjustments, should I be reducing the values to the cells which have positive percent values in lambda and increase the values of the cells which have negative percentage values in delta lambda? Is the goal trying to get the percentage of delta lambda as close to 0% as possible?

I hope my questions make sense! I'm sorry if they don't as I'm very new to this and will clarify as much as i can!

Thanks again for helping me out

-ViCC

[CalibratEd]

Thanks Ed!

A few questions for you so I understand this well... when you say I have to reduce timing, is that done in the cam angle low & high or somewhere else? If so, to reduce timing, do I decrease or increase the values within the cells of the cam angles where knock is present?

As for fuel adjustments, should I be reducing the values to the cells which have positive percent values in lambda and increase the values of the cells which have negative percentage values in delta lambda? Is the goal trying to get the percentage of delta lambda as close to 0% as possible?

I hope my questions make sense! I'm sorry if they don't as I'm very new to this and will clarify as much as i can!

Thanks again for helping me out

-ViCC

The timing needs to be decreased where knock is present. You need to review the datalog to see where the knock was present.

For fuel the cells that have positive values means that the fuel needs to be increased and where number are negative the value needs to be reduced. When dialing in fuel you want to have it + or - 5. The long term fuel trims when done should be close to +- 10.

- Ed

[ViCC]

Hi Ed,

Thanks for that information.

I found a different cal and I made some slight changes to it. The knock count went down to only 1, which is a huge difference from the previous cal.

I did some dataloging with this new calibration (attached below), and I was wondering if you could take a quick look at it.

I noticed that the fuel tables need a significant increase as the ECU is trying to compensate for the lack of fuel. Am I reading the data correctly? I don't wanna change anything that could potentially make things worse!

Also, if you have any suggestions as to what else I should focus on changing/adjusting to make it run better, I would highly appreciate it!

Thank you, and I look forward to your response!

-ViCC

[CalibratEd]

Adjusting the fuel and timing would be the basics to get the car running well. Ideally you should tune every table. Adjusting the VTC tables also yields more power. It depends how deep you want to get into the tune there is also open loop parameter, iat compensation ECT compensation, pedal tuning etc. If you are interested in this I would look into YouTube videos.

A lot of these things are adjusted when you get a tune.

I will take a look at the files when I have some down time.

-Ed

[CalibratEd]

Hi Ed,

Thanks for that information.

I found a different cal and I made some slight changes to it. The knock count went down to only 1, which is a huge difference from the previous cal.

I did some dataloging with this new calibration (attached below), and I was wondering if you could take a quick look at it.

I noticed that the fuel tables need a significant increase as the ECU is trying to compensate for the lack of fuel. Am I reading the data correctly? I don't wanna change anything that could potentially make things worse!

Also, if you have any suggestions as to what else I should focus on changing/adjusting to make it run better, I would highly appreciate it!

Thank you, and I look forward to your response!

-ViCC

I had time to review the log. The car is running lean.

-Ed