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How do you know someone only used it for 6 months?

You don't.

AFM's are so cheap that it's just not worth the risk. They seem to only last 10yrs anyway so almost a consumable like a timing belt really. They certainly don't last the life of the car at all. AFM's are known to fail regularly.

A 2nd hand Z32 could be 5 years old for all you know, and belted around a bit. For the sake of a couple $, just get a new one.

Very true. 

Even having successfully bought 3 used ones that were perfectly normal to date, I would say go for a new one. There is no guarantee that a unit that was previously working fine will continue to do so for long. AFM's a very fine and precise piece of electronic equipment, it wears over time, dies from vibration and if it fails under load, ECU has no idea about actual engine load and returns wrong fuelling and spark data, so engine is at high risk of fatal leanout or ignition overadvance, which costs hell of a lot more than a coulple of saved $, so it's a false economy.

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i was think that when i was driving over to look at the afm.... how do i no if this is even goin to work on my car.... was it taken of the 300 in the first place and is it realy worth saving $200 not knowing these stuff..., i dont think so

a bit of the topic but does anyone no about a loom or somthing that has been made for a strait replacement of the afm plug to fit the skyline one... iv hurd it is hard to acualy find the plugs for the z32 afm

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a bit of the topic but does anyone no about a loom or somthing that has been made for a strait replacement of the afm plug to fit the skyline one... iv hurd it is hard to acualy find the plugs for the z32 afm

Who told you that lol?

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