Hondata

Your tuner most likely set it higher to smooth out your powerband, usually when vtec kicks in there is a slight drop in power. As far as your idle issues. There should be an idle adjustment screw located near the side/top of your throttle body, if it's cranked all the way in try and back it out a ...

Are there any error codes that pop up on your s300, sometimes it's not necessary a vacuum leak, double check all your vacuum connections. I had an issue like this before, turns out whoever owned my car last had the evap vacuum lines all mismatched, had to follow the vacuum diagram to fix it.

First off, check if your software is up to date. Head to hondata.com and download the newest version. I believe its 2.25 right now.
They added a feature called Vault which you can use to find similar maps people have uploaded. If your not sure about doing that you check your smanager folder in your ...