i have a 95 integra fully built with a stage 2 rev hard kit. i just noticed a small crack in my manifold on the outside right between the split of the pipes. its about 1.5 iches long.

is this a defective manifold or couldve my engine damanged it? ive only been running 7psi because i dont have my controller hooked up. so i dont think it was that.

 

Did you buy it new? You can check to see it it has anykind of warranty. It is possible that you caused it if you dont have a flexpipe in your exhaust. I would call up the company and see what they say.