First off probably my fault alittle, but ive also read on others having this issue too. First problem i had i installed them and then found they were not welded fully around a o2 hole... fixed that about a year ago. Fresh motor goes in today and cranks up nice and fine. After about 5 mins i see a large plume of mist come from the hood so i shut her down asap. Look around thinking the worst and find the ac line burst from being melted... bad design on macs side, but i probably could have prevented it... just alot of stuff on my mind other than that. Anyways end rant, at least it wasn't the motor. Make sure you check the ac lines on your long tubes!!!:cuss: