Which Ebay CAI have people been buying? I bought one from Jax_racing and it was missing the couplings for the MAP sensor. So I'm sending it back to hopefully get my money back. I was trying to be cheap and hoping to get something almost as good as AEM or injen. It didn't come with instructions either. I've seen the how to threads and am pretty mechanical so I figured what the heck, I can put this on. The old one was off like a prom dress and then nothing lined up right so I put back together. Enough venting, I'll just get the real thing.