ORIGINAL: crowdie
Im not sure if its tuned right, it was but then i changed fue to 20%. Will i need to tune again?
Any time you change the nitro content in fuel you need to retune. Many times you have to retune day to day do to weather changes. Some times from morning to afternoon if there are big weather changes.
If you went up on the nitor content more then likely you need to richen it up.