No. The stock regulator will work just fine as long as you have no supercharger or turbocharger or other tuning problem that needs extra fuel pressure.
See the "Surging Idle Checklistfor help with all your idle/stall problems. Everything you need to find and fix idle problems is in there.
The first two posts contain all the updates to the fixes. At last count there were 24 possible causes and fixes for surging idle/stall problems. I continue to update it as more people post fixes or ask questions.