Catch Can affect engine performance?
I am considering the purchase of a catch can for my 2005 M6. I have been reading some threads where seemingly simple mods have unintended effects on the system as a whole. (e.g. Changing the air filter and intake tube caused the system to run rich because the sensors had been calibrated for the stock setup. This can be solved, but from what I understand would require "tuning" from someone qualified to solve this problem.)
The information provided about catch cans make sense to me and I would not forsee any issues that would require any further engine "tuning." Am I correct, this truely a win as far as a mod goes?
Thanks for the help.