Stock manifold to Vic Jr.

I'm getting ready to pull the trigger on the manifold swap and lost the email Allen sent on the subject. When I swap out the manifold is a retune absolutely required? Not changing anything else and hope the current tune would get me to SA to go 2bar SD.

Andrew, I would get a retune, but it will run fine until then. I would be a little careful with it.

Thanks Billy. I'll be calling you in the next few days.