I was under the impression that most car manufacturers make minor changes to the engine every year. I hear people talk about how the '89 mustang was the most powerful of all the classical mustangs and such. Just look at the specs of the different year S14's; they all have different mpg ratings. Somethings gotta be different.Acuratechva wrote:no major diff or no diff at all? i was under the impression that all S14 and S13 DUal cam engines were identical.