I never shimed mine for OD 30%. Mine ran great and was easy to tune as well. Mine was version 1 so yours will be even better. I sold it around the 4-5 gallon mark and was still running great. I think I ran a hot plug in it MC59. Power wise its pretty good. You'll be able to keep up with alot of others and at that price the smiles wont go away...





Unless you get a bum one