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Message: <blockquote data-quote="speedchaser" data-source="post: 1347728" data-attributes="member: 5171">No need to tune 400 times la.For a car without a base map. You need only to get a few base points on the map and you plot a workable graph on a worksheet. From there you get yourself a lambda and work out the AFR. After that you do up the ignition the same way, advancing it on NA as you go higher in the RPM and the other way round for boost. Fiddle around on the spark dwell time and you are set. Finally, it's the touch up on the idle, temp... etc. At the end of it all, load the data out and smoothen all the ranges in the graph on a worksheet and upload it back.That's a rough idea to go about it, which I did when I tune..Autotune is a hassle if you don't have the necessary tools. Wideband, accurate temp sensors and the like. If you do it with what you car came with (OEM) sensors and all, as you do fine tuning, in the end you might have a map that's totally different from what you have autotune with. It's not as simple as what people say when you can autotune and you come up with something perfect, unless maybe an Autronic which is way out of my league in terms of moolah$.That's my 2 cents.</blockquote>

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