Some popping is to be expected on a high performance engine such as this. You can usually tune it away with an over rich idle mixture, but this will give you other problems. Along with loading up the sparkplugs when you are stuck in traffic or at a lot of redlights, the idle and transition circuits come back into play as a power enrichment system at speed, and tuning for no popping will cost you 5 to 10 MPH of top speed. For an example, mine would barely reach 105 tuned for no popping, but I've seen 115 with more to go when tuned for highest idle speed.
