Hondata

Use the stock tune and adjust fuel and timing as needed. It will run ok until you can get it properly tuned.

-Ed

You will not know how the car is running without a log. I recommend you load the calibration and create a normal
Drive log. You should never make pulls off the bat.

-Ed

I have not looked over the logs as I am away from my computer. I would say you may be experiencing an electrical issue. To start I suggest you set the VSS to constant speed to rule out a bad VSS. If the VSS is not working well Vtec will not engage.

I also suggest you make sure to calibrate the TPS ...

Welcome to the forum,

Post the calibration file as well.

-Ed

Are you having specific issues or do you need an overall health check of how the car is running?

-Ed

Wiiboi wrote: Tue Sep 15, 2026 11:39 am I'm sorry i have taken so long to reply to this, turns out a wheel speed sensor was starting to go out and it was doing all sorts of weird things but adding some fuel all around the switch point did help smooth things out significantly :)
thanks for the help!

No problem

-Ed

Sure thing. Post the log and I will look it over when I can.

-Ed

The car has a few counts of knock and is running lean in the upper RPMs and rich in the upper RPMs when it engages VTEC. After the intake change you should switch to a speed density tune.

-Ed

szoterr wrote: Wed Sep 02, 2026 3:00 pm That's the one

Yes, this tune is running in speed density (MAP based).

-Ed

Post the logs and the calibration. Ill take a look at them.

-Ed

CSpeade51 wrote: Sat Aug 22, 2026 9:42 am Here is a fresh photo if you clicked on the thread. thanks.

Looks good.

-Ed

Post a log and the calibration and i can take a look at it. Normally for aftermarket intakes the cars run better in speed density. These car are known to heatsoak when you have an open air intake under the hood. The car may be doing what it needs to do to prevent knock. If you have zeroed out the ...

Did you let your tuner know about the issue?

Post the log and calibration file and I can take a look at it.

-Ed

Sure thing! Look through the threads and find the calibration. Post it here and I can verify.

-Ed

Have you added fuel to the table right before it switches into the VTEC tables?

-Ed