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.
Athletics: Big Island turnout expected at Manchester Marathon
It's the second largest event of its type in the UK
Football: Colby stun defending champions in Hospital Cup
Douglas High School Old Boys relegated from premier league during Saturday clashes
Rugby: Douglas beaten in Regional 2 North West play-offs
Ramsey win final home game of their season against Congleton
Spirited FC Isle of Man lose out at Padiham
Both sides finish the game with ten men after entertaining contest
