Once you add breather mods (I.E. CBE, Intake, longtube headers or, HFC or headers) it would be beneficial to tune the vehicle. These mods will lean out the car. If you do all four mods it can be detrimental to the engine if you do not tune it. With the mods the OP stated it is not a must but definitely recommended for both AF reasons in addition to getting maximum benefit from money already spent.
There is another thread that goes into depth on breather mods and AF ratios posted here
Intake, Header, HFC, CBE = Too Lean?.