the most you will be able to do is lean up the normally rich stock afr. you will need a wideband o2sensor to read it accurately though. you can adjust timing too but i doubt you will see any gains from it with a nz setup.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Hyundai Forum: Hyundai Performance Forum
A forum community dedicated to all Hyundai models owners and enthusiasts. Come join the discussion about modifications, classifieds, troubleshooting, maintenance, reviews, and more for your favorite models!