i have tried torqueing the dogbone clamp on these bassani true duals, i put red high temp adhesive and it turned to cruchy powder and that stuff has a limit of 650 degrees i emailed bassani no response yet its at the crossover connection is there any other stuff that anyone is using that will withstand the heat on the pipes

 

Try Permatex Copper High temp sealant.

 

I would try it but i am a little concerned that that pipe gets upwards of 700-1,000 degrees that substance probally will not hold at that temp, it works great on mufflers but being so close to the engine probally fall apart, maybe i will try putting a muffler clamp on rather then the t bone clamp, that clamp seems pretty cheap especially since i spent over 400 for the pipe very disappointed with bassani