Board Thread:Questions and Answers/@comment-27151324-20151102135436/@comment-38438731-20190903225819

it all depends on the nitro reliance level and the nitro efficiency of the car. I use perfect nitro on any car that has under a 7/14/? nitro efficiency. if it has above an 8/16/24 and is nitro reliant, I still use perfect nitro. I only use level 1 nitro if it is not nitro reliant or has good acceleration and does not need it and if it has over a 8/16/24 nitro efficiency.