everyone is right. i have heard nothing but bad things about xs. except the intercoolers, there are a couple people on here that say they like them. i think a couple of dms guys have them too. theres been about 4 threads started about this company. also, do a google search and you will find all the same responses you got in here. i ran one of there manifolds except i re-enforced all the welds and support brackets and never had a problem, but the way they come are poorly built with poor materials.