# Wahoo Core2 Zwift Cog \<\> Wahoo Systm **URL:** \ **Category:** Uncategorized\ **Created:** [September 23, 2025, 2:50pm UTC](https://wahoox.forum.wahoofitness.com/t/wahoo-core2-zwift-cog-wahoo-systm/30212 "2025-09-23T14:50:12Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![emacdoug](https://sea2.discourse-cdn.com/flex020/user_avatar/wahoox.forum.wahoofitness.com/emacdoug/32/15557_2.png) [@emacdoug](https://wahoox.forum.wahoofitness.com/u/emacdoug)\ **Post date:** [September 23, 2025, 4:46pm UTC](https://wahoox.forum.wahoofitness.com/t/wahoo-core2-zwift-cog-wahoo-systm/30212/2 "2025-09-23T16:46:09Z")
Hello and welcome to the forum. There have been some other posts on this subject. You can start here, and there are links to other thread inside this thread. > [@Zwift Cog & SYSTM](https://wahoox.forum.wahoofitness.com/t/zwift-cog-systm/30180): > > My current setup is a Jetblack Victory with the Zwift Cog. (I don’t plan on using Zwift). When i did the 4D Full Frontal, it said to use Level/Slope to simulate ground surface (flat riding). Which i did. I had a lot of trouble managing the test because it was virtually impossible match the watt asked and the cadence. I typically ride around 90 but i was also trying to manage watts to do what the training asked. It felt like inwas not doing the test properly (it was still extremely demanding m… The gist of the idea is that while the Zwift cog can be used in ERG mode in SYSTM, virtual shifting with the cog is only available in Zwift. So, doing your fitness tests in SYSTM to get your 4DP numbers is possible, but requires a bit of a hack by either dual-recording with Zwift and SYSTM, or changing between level/slope mode settings in SYSTM while riding. --- _[View the full topic](https://wahoox.forum.wahoofitness.com/t/wahoo-core2-zwift-cog-wahoo-systm/30212)._