I just had a 93 Civic Lsi M/T as a second hand offer, for that i am the 6th owner. I darent to try the top rpm, can anyone tell me what is the max rpm of D15B2 engine? More, I found when in 3000rpm and 5000rpm has Vtec like power coming out, I am not sure if the engine has been changed/modified. It is normal for Lsi?