Originally Posted by idrift4wd
So your saying that if i put 87 or 91 in my tank vs 100 ocatane. it would perform equal or worse?
It depends. If the car runs fine on 87 or 91(meaning no timing corrections) then going to 100 isn't going to help. More than likely on 87 you will have timing corrections so adding in some 100 will help to clear up timing corrections and in that instance it will make a little more power.