i thought about it... I ALMOST bought a TSX a few months ago, but it was really under powered. The engine was sporty but VTEC engagement at 6k and the weight of the car made it really slow. I can imagine a K24A2 (which has 3 rocker VTEC just like the K20A2 and K20A type R) would run pretty good in a civic. The main difference in the engines (other than the ECU which is shitty in the TSX) is that the VTC intake cam gear has about half of the electronic advancement of the K20A2 (25* instead of a max 50* on the K20A2). some people have modded the cam gear to 40*, but any more than that and valve clearance is an issue. Hondata makes a reflash that adds almost 20whp to a TSX, which shows the stock program is shit. The TSX also uses drive by wire throttle body, which means that you will have to buy an intake manifold adaptor from hondata, and a K20A2 or type R intake manifold, so you can bolt up a traditional cable controlled TB. They are strong when tuned correctly. Hondata has done a lot of tests with the K24A2. They have swapped cams and a few other things. heres a link.


http://www.hondata.com/tuning_the_tsx.html