Just had an engine swap on my 1996 Integra Special Edition. The swap was for another b18b. I noticed that the new engine has very little power. I have a hard time speeding up to freeway speeds and I can't get up hills very easily. I don't see how the engine could have lost compression with less than 60k miles. When I step on the gas it takes forever for my engine to rev up. What could be causing this, what would be my next step?