really?!? i didn't kno it was tied in with the keyless entry. i think ur boi was smoking some crappy ish! haha i put in a aftermarket HU in my friends 00' prelude and it's just fine. The only prob that i kno of with the 00' prelude is the acoustick feedback, which is located on the 6x9's.

if u think about it, the keyless entry works on its on mechanism. It can't be tied in with the HU. My friend's keyless entry works fine after the install!