Im running an open air wastegate. And when driving hard the car and lots of time with the gate open. Smoke fills the cabin. It comes from under the floorbord out my kick panells and from my emency brake boot. Anyone else have this problem? And also the smoke is kidna white is this a prelude to a engine dying? Or I have soemthing wrong with my wastegate/exhust. I am running a new downpipe with no precat.
Please Help

 

Check and see if you have an oil leak onto your exhaust system. This will give you the kind of smoke you are talking about when you idle for awhile after a hard run.