Review on DNA Motoring OEM-ITM-004 Intake Manifold 615-188: Upgraded Performance for Ford F150/F250 F350 SD 5.4L V8 by Corey Moulton

I have installed several of these aftermarket intake manifolds over the years and understand some of the issues that come with missing CV threaded inserts. and fuel rail. This was my first time buying DNA vehicles and I would recommend you stay away from this brand. I had just tightened the first round of the mounting bolts to 18 inches and was starting the second round at 18 ft lbs when the ring in the manifold collapsed before my torque wrench reached 18 lbs! Never, ever has this happened to any of the cheap nameless collectors I've used in the past. They still had split collars like this one but unlike the OEM which has fixed collars. I'm grateful to Revain for the return policy, but I'm not happy with the time I spent on this collector's junk. Buyer Warning.