Quote Originally Posted by CIV-18C View Post
Between the K20a2 and K20z1 are these differences noticeable?
No, not noticeable.
Consider this factor.
K20Z1 puts out 154kw (Type S)
K20A2 puts out 147kw. (Type R)
7kw difference.
DC5 Type R weighs 1160kg i believe? Feel free to correct me
DC5 Type S Weighs 1230kg i believe also.

Hope this helps also.

Not noticeable to your average driver i'd say, nor any of us who drive one of these cars in my opinion
If you want the full details, use the search engine provided on OzHonda and look up Type R Vs Type S, plenty of information there