TOPIC: Mitsubishi Gallant 2.5 V6 Trottle Mod?

Hello, Todor from Bulgaria here. My friend in Holland wants to groove the throttloe body of his 2.5 V6 Gallant. Can you give us some advice? How should we groove it and which vacuum lines should we tap and which should we leave as they are. Hers are some pictures of the throttle body:

hi, it looks like you will have to do some epoxy filling in the idle air pathway, but im only looking at your pictures on a mobile phone.

Well,
Here I am guys. I consider this "groove" procedure very handy in matter of fact the fuel price at this moment. I would like to hear any advice from you regarding my throttle body.
About the car , yes, It's Mitsubishi Galant.

With kind regards
Rumen

epoxy the throttlebody in front of groove cut the groove and cut a line up to butterfly rod.