Have a look at the esl website, it's something I'm looking into and is a very good looking bit of kit loads of features, and will be able to incorperate further mods, plus maffless running and anti lag/launch control if you wish, plus it's live mappable so it can be set up fpr your driving style,
I beleive savage has one on his car or had, I just don't have the funds available at the mo to go ahead and upgrade
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