With an LMM put the blocker in. I did one and we didn't have the plate yet, so we ran it without. Sucker BLACKED out the road behind us on the test drive. Put the plate in and no more smoke. As to who, do you have a V2 or are you going to buy an autocal? Theres alot of options out there like PPEI and RIDGERUNNER to go to for race tuning.