dude used one of these kits as ive said before and there not to bad for a first starter craving some boost...honestly not as bad as some people bag them out to be...yes manifold issue ive had them but not something that cant be fixed......had it for almost two yrs and the only thing im still using that came from the kit was inter cooler piping. sold all the other bits separately for almost as much as i originally bought it for soo all in all i wasn't to upset with buying one of these kits