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For a few hunred you can get.
The hand held Tuner: good for Adjusting for mild Peformance mods.
(tire size , Gears, TM of Trans, gas octain) Canned Easy to Do.
But beyond that you will want a PC based tuner. I will be using HP tuner.
For FI and Nos, Headers . Learning curve (Baby Steps) or you can screw up a tune. But you can save old Tunes and there is a good suport group out there.
I am still baby stepping my tune on My Supercharged 5.3. but it pulls like a Mule.
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