I agree with Joe also ramon...

Get it in writing what Nizpro are willining to do then make your decision from there.

I think the way ur email may have sounded by there response, that you were willinging to pay for it so they dont need to admit liability. Now that you have cooled down a little, see what they have to say and get it in writing.

If they blame fuelling and you blame wastegate get a neutral party to inspect it and make an engineering decision. If they blame the fuelling u still may have a leg to stand on as they tuned the car.

If they said in writing that they told you not to drive the car then this is there only get out of free card.. If not you may have something to go with.. I would definately get a lawyer involved...

__________________
I'm a jockey kunts...