Originally Posted by TheOtherDave™

Wow.:eek3:

Most of the members on this site are in the United States, and I live in Los Angeles, California. California is known for having very strict auto emissions laws, but our laws certainly aren't that bad. :hs:

I won't lie to you...without turbocharging, it will not be easy to get another 50 horsepower out of a motor that already makes roughly 100 hp per liter of displacement. 230 hp divided by 1.796 liters comes to about 127.7 hp/ liter.

That kind of specific output requires very high compression, aggressive cams and high-octane petrol. You would be spending thousands of dollars to essentially rebuid your stock motor into a racing-spec engine.

To be honest, a K-series motor swap, if allowable under your laws, would be the most reasonable approach for making 230 hp.

The K20A has been successfully transplanted into the 94-2001 Integra and Civic. And from the factory it already delivers more than 210 hp.

Since you mentioned that reliability is essential, I think it would be wise to swap to a motor with higher output, if your laws allow it. :hs:

Lastly, welcome to Honda-Acura.net. :cheers: