I tried a couple hot n fast cooks using the Cajun Bandit expanded charcoal ring for the 22" WSM using BBKingsford and the BBQ Guru w/10cfm fan and the amount of charcoal was too much to keep consistant high temps. I could prop the door open and it would soar, but after closing it the temps would settle @ 275*.
Since then, I started using a smaller diameter expando or the ring from an 18" bullet and it works much better with the Guru for HH cooks.
On the flip side, I did the WSM door prop mod on the 18"&22" WSM's and the Cajun Bandit Stainless Steel replacemnet doors and turned all my bullets into Turbo Cookers-no need for the Guru or Stoker IMO.
Brian - Left Hand Smoke BBQ PNWBA 2010 Team of the Year
BGE's/WSM's/BWS Gater/BDS Clones/Weber Performer w EZ-Que/Cajun Bandit/Rib-O-Lator Test Pilot/La Caja China/BBQ Guru/Weber 1000 RK Drum Coffee Roaster
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