K&N replacement oem filter & Genie cat back exhaust. Both cats remain. Will this create too much boost for stock fuel system and cause lean mixture? Your thoughts please.

My primary concern is reliabilty and longevity which is why i'm going stainless, but i don't wanto to fry my motor with too much boost.

 

I doubt you should have problems but I always recommend a good boost gauge because everyone's results may vary