First let me start by saying.

I understand the differences between emissions deleted and intact.

What I would really like some one to maybe point me to understanding is what exactly are they changing when tuning.

Is it actually as good as deleting?

I guess what I’m saying is.

I don’t understand how you can get a engine to run clean enough while still running an egr and not worry.

Or are they just Regen more often?

I know I’m late to this game I’ve owned my truck 5yrs now and was planning on deleting but with the current climate around deleting....

I made sure since from new that I’ve changed my oil at 5k mile intervals trying to keep as clean as possible.

I know I’ve strayed here a litttle from my question.

Thanks