I'm a car newby and currently looking to buy a used 2005 wrx, and the one I'm interested in has a modified intake and exhaust system. Also, the guy wants to sell it at slightly above blue book value.
Now I have read on these forums that its bad to modify the intake early on a wrx, causing the engine to run too lean? (excuse me if my terminology is wrong) How much of an issue is this? Is it possible to modify it back to stock?
I intend to drive my car casually and not modify anything in the near future.