My car has the invidia manifold on it stock radiator was heat wrapped with oem hose. I got a stainless steel hose to prevent the manifold from burning through, now after I replaced the oem hose with the stainless steel hose my car overheats after 15 minutes or so. I know you shouldn't use this manifold with stock radiator but could the hose touching the manifold cause my car to overheat?

I have no other mods besides full exhaust and intake

 

Did you burp the cooling system after replacing the hose? If you have pockets of air trapped in there, you're going to boil the coolant and desired operating pressure will not be reached, instead you're just going to get higher coolant temps and inadequate cooling.