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Message: <blockquote data-quote="shovel" data-source="post: 1588439" data-attributes="member: 29855">OK earlier in this thread I think I mentioned my conversion isn't done yet.. here's why.[ATTACH=full]50085[/ATTACH]That app on my phone is the Holley configuration tool that lets you run setup, configure some (not all) of the features of the EFI and gives you a readout of whatever gauges you want to view.   I recorded this with an action cam so it's blurry, sorry - the little 91 you see there is the MAP sensor readout in kilopascals,  atmospheric pressure at sea level is 101.3 and where I am should be about 95.    When I put the key in "Run" it reads 94 so that's pretty close, within a calibration error or low pressure weather system.   But when I start the car and let it idle it only drops down to 90-91 which is not at all reflective of reality.   The software thinks that there's either a mega vacuum leak or that the throttle blades are wide open with the throttle position sensor at 0 and since it's a speed density system it uses manifold pressure for load calculation.  I spoke with Holley tech support, they agree it's a faulty unit out of the box so I'm sending it in this afternoon for warranty - that means at least another 2 weeks down.   Not real excited about that since the summer can slip away fast, but nothing I can do about it.  Anyway that is hopefully something you won't encounter if you go this route I just figured it's worth posting here both to explain why I don't have a conclusion and awesome driving videos to share and also to demonstrate one of the pitfalls that can happen.</blockquote>