If you want to "log" go with the Innovate Lm1 or the Techedge. You can monitor a/f plus add several other 0-5v inputs to monitor.
If you want to "tune" the Vec2 is the easiest and allows one to also add timing where as the split second doesn't.(I am pretty sure you can't add timing with the ss).
Honestly, you will want and need both to reach there full potential.
A forum community dedicated to Dodge SRT Viper owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!