gday all, have just brought sirio evo 4 and everything seams to run well until about 1/4 way through the tank. after full throttle into corner the revs seam to stay up for a while then drop, from what i can see the fuel tank its bubbling and air is going into the fuel line causing this.
have asked a few people all with different answers so would love o hear a few more

cheers

The engine is becomming to hot I think, try to set it 1/8 turn richer on both LSN/HSN