Tuning out flat spots?

[amant02]

Hi all,

So Ive just installed a CPL CAI intake and am getting a flat spots at about 3k rpm.

Im currently on AFM tune and I think the flow turbulence on the CPL is causing this. I guess that's the reason why the stock airbox has those fins.

Datalog shows spiked to 16 AFR!

My question is how do one tune out these flat spots? I have re calibrated the MAF/AFM voltage vs S.Trim and its still there.

Or do I finally have to go to a MAP tune? I'm dreading the extra work involved with fuel tables.

Go to someone who knows what they are doing before you make it worse.

Flat spots when intake is played with it in my experience if the tune is good, you have a leak some where causing air not to flow smooth.

[Lerlo]

Go to someone who knows what they are doing before you make it worse.

Flat spots when intake is played with it in my experience if the tune is good, you have a leak some where causing air not to flow smooth.

I'm not an expert but I think I know what I am doing.

The issue with the FN2 is it runs on MAF/AFM sensor which requires a linear flow regardless of the mass flow rate.

Aftermarket CAI do not have the stock fins that provide a linear flow for the sensor.

Typically, a MAP (Manifold Pressure) tune will need to be done to bypass this issue.

I am just asking if anyone here have experience tuning using the AFM sensor because there may be something I do not know.

I have only tuned MAP previously and would like to learn more and I kinda like the ease of AFM tuning.