Definition Answer
 

In an earlier post Damian installed a hyper grouding system. In his discription he used the abbreviation "UIM". What does this stand for?

Upper Intake Manifold.

It's the polished peice in the picture below:
http://www.negative-camber.org/crispyrx7/uimafter.jpg

Thanks a bunch.

You can also check the FAQ thread:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/

There is a small glossary of common terms & abbreviations.