for my SR20DET in my 240SX and so far for 7K miles, no chipping or any issues. I also took the recommendation of Swain Coat to use a high temp paint over the white lightening coating as it they said it might change colors over time to a more off white color.
I also have used the same coating on my turbine housing. Do not put any high temp paint on these piece though as it gets too hot and the paint will eventually burn off.