I know the drop in does not require the cai tune, but I have heard the cats gain 9-15 hp on the dyno. This makes me think I need more fuel thus I was wondering if I should use the 93cai tune wich I believe adds more fuel. As far as the O2s I am currentlly using plug foulers that seem to keep me from ...

When you make adjustments to say the 93 tune such as fan settings,shift points,rev limmiter etc and you then reinstall the stock tune to take it to the dealer. Do you then have to change all those parrameters again when you reinstall the 93 tune or does it save all the changes you have made?

Was just wondering which I should use I have a 300 SRT8 with high flow cats and a K&N drop in filter. 93 CAI or regular 93? Dont know if the cats require more fuel.