Tuned engines will be allowed again at the two sidecar races at T.T. 2014.
Organisers have decided to return to "Open Class" regulations after talking to many of the competitors.
For the last two years, crews were not allowed to run tuned engines in their outfits in an effort to bring costs down.
However, after consulting with the teams, operating budgets appear not to have signicantly reduced.
Football: Ayre and Peel to meet for 2024 Railway Cup Final
Sides facing off in last two for second season running
Early goals 'drained all the confidence' from FC Isle of Man
Manager says the Ravens 'weren't at the races' against Lower Breck
FC Isle of Man fall short at Lower Breck
Clinical hosts extend Manx side's winless run
Manx hockey players embark of 15 month DiSE programme
It's a Diploma in Sporting Excellence (DiSE) programme run by England Hockey
