SOLVED:Idle Problem

[Niall]

Everything is done up tight! D: Its blowing from the centre pipe/cat section but still throwing plenty out the back. :/

Theres no way that such a small leak could cause such a big issue. Ill do everything up tighter tomorrow but i dont believe that that is the problem. THe manifold was fitted by Carl Chambers who knows what he is doing. It has been fine for a few thousand miles and caused no problems up until the time where the idle would become stuck at higher rpm then usual. Now the problem has escalated to no idle at all and a bouncing effect!

If anything it looks like a sensor or something that has been slowly giving up and has no given up all together!

There's no way it could do that? Well that happened to me so Maybe consider it instead of just guessing.
Try unplugging the map