I have a problem with my X type (2004) . whilst driving ,I accelerated and there was a jerk and an immediate loss of acceleration , there was also a whistling noise coming from under the bonnet. The turbo seems fine but on investigation was told that one of the hoses is prone to splitting. I changed this hose (no split in origanal) but changed it anywayto prevent itoccuring in the future. When I started the engine the problem and whistle was still there. It seems to be coming from under the area of the battery holder but is difficult to access . My problem is that if I take the battery off I will not be able to start engine to listen where whistle is coming from and what are the consequences of removing battery (loss of radio etc? )are there other common pipes under the battery holder that split?. The pipe I renewed was on the other side of the engine from the battery holder