It doesn't look that good, I have seen those exhaust tips on a great deal of hondas(such as the dual exhaust setup on a Si) and you have two of them, I appreciate what you were trying to do, but should have customized the Tips that come stock, and it would look great. Rice is something done cheaply to get some performance, like cutting your hood for more air, or making a choppy exhaust. Or something that is just for looks and gets no performance.

And how do you know it added hp? Have you had it dynoed? That is the only way to be certain.