Rev-Up airbox on a VQ35DE - special note
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I've yet to see a dyno showing any evidence, but some owners believe it may increase power slightly. Some also think it increases throttle response and changes the sound slightly. The engineers must have had a reason for putting it on the revup engines. Maybe it makes power, or maybe it just allows the MAF to get more accurate readings. I think the most interesting part is that the engineers chose not to put it on the non-revup models. It seems like it would save money to have just one part number for a given model year, unless that part was not beneficial for all engines.
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I've yet to see a dyno showing any evidence, but some owners believe it may increase power slightly. Some also think it increases throttle response and changes the sound slightly. The engineers must have had a reason for putting it on the revup engines. Maybe it makes power, or maybe it just allows the MAF to get more accurate readings. I think the most interesting part is that the engineers chose not to put it on the non-revup models. It seems like it would save money to have just one part number for a given model year, unless that part was not beneficial for all engines.
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From what I've read, and the fluid dynamics (is that the right word? lol) it makes it flow better. Imagine you're on a highway and it makes a sharp turn. The traffic would bunch up at that turn. But if you make it a bigger curve, then the traffic (in this case air) would be able to travel more smoothly and faster.
Bigger velocity stack = bigger curve
Bigger velocity stack = bigger curve
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