i have stock mani w/ stock gasket datalogs and new mani with new gasket datalogs but once we realized the stock gaskets wouldnt seal when we were pressure testing our prototype mani's (before they were ever installed on the car) we knew we needed to make our own. at that point i had a couple customers send in their spacers to test as i suspected the issue before they even arrived here. this isnt an end of the world type issue but to solve that problem for as easy as swapping in new gaskets is well worth it in my opinion. we have known about this for several months now but i wanted to make sure we had the gasket material tested and we had enough cut for the manifold group buy guys before i posted and put them up on our website.

also here is a nice tidbit for you guys, we tried 2 different (well known and recognizable) companies "intake manifold" gaskets and the things leaked right thru the gasket material, WTF

this is our 7th gasket material we have tested before being satisfied