I have just installed the Ripmax exhaust onto my Rush Evo.

I have set the engine back to base settings and then I start it, it just revs up until I remove the fuel line.

Can this be caused by a leak either in the header to engine joint, or even on the header to exhaust joint.

I have just noticed that the old gasket is still attached to the engine, I have now removed it, it is a little late to be testing the new pipe so i will have to wait until tomorrow.

I presume that two gaskets is a big no no and probably the route of the air leak