I was saying it's not a good idea.But I used different nozzle jets till my car wouldn't Rev then put the next size higher then tuned with the pill for the return.You can tune each cylinder separate but it was eisier to just square them off my egt Temps was 1140 and my motor ran the best.Some of my friends ran theirs rich that caused their oil to milk.i forget what percentage I had my barrel valve at but my car weighed 3060 with driver 511 Cid ran 5.60.If I tuned every cylinder it would pick up a tenth to tenth and a half.