using 93 will not harm the engine, of course it may not be needed though. If you have the SVT you should use 93 octane though, if you read the manual or look on the fuel gauge you will notice that.

Traded in - 2000 SVT Black tan leather DMD, Pro-Flow 75mm MAF, SHO Shop Intake Mystery mod(awaiting installation) Now 2004 Acura RSX Type S 2003 Honda Civic Hybrid