Instruct: Classify the given review as either positive or negative.
Query: K&N 33-2342 Replacement Air Filter for Honda Civic 1.8L

A simple replacement of the original air filter. Just goes straight in and the air box lid clamps downin the normal way. However what is immediately noticeable is improved engine performance. Even allowing for previousclogged air filter, which wasn't that bad, having covered 31,000 km on sealed roads only. Engine breathes free-er, andis more responsive.