Hey im new here but i have something to say something about the d15b2s there awsome engines the things u can do with thos stock i know what the guy was talking about i ran one civic si didnt smoke him not claiming that but i kept up and it was the new mugan one so yea there very accomplised machines if u can use them right like i had a 91 ford festiva 63 horsepower raced a crx si one day off a line chirped 2nd and 3rd JUST alittle bit but yea i dont think id go as far as ever putting 8g into a d series motor for any reason lol