I saw 2 issues with mine using V4 93 or 91 tunes.
1. Full throttle hesitation, but only on the freeway when I kickdown the trans with full throttle to pass (60+ mph).
2. Bounced the rev limiter before shifting to 3rd from a stopped full throttle take off.
After just installing V5 I also installed new plugs gapped at .030". The old plugs still looked good with 20,000 LMS tuned miles on them (tuned at 2,000 miles). Gap did opened a little to .032" on each of the old plugs.
The winter blend fuel may be contributing to these issues, so I may give V4 another try after warmer weather arrives to see if those issues clear up.