we changed up our fabrication techniques, welding consumables used, materials used etc. this was 5-6 years ago and this is when our products dramatically improved in durability. all our manifolds are purged also which is a must. we did have incidents of cracking prior to these changes this and each and every customer was either refunded or provided with a non faulty unit. we were the first to offer lifetime warranty..i believe other manufacturers are doing the same now which is great we have many customers who use their ep's for cirucit/time attack and rally and so far our products have held up to the abuse. we do not use remote w.gate location anymore mate..we changed that up a while back. now w.gate outlet is located up top near the upper radiator hose i've said this before..you cant really go wrong with any of the manufacturers on this forum..