Xtreme X or spd/bus stop tune? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 04-28-2012, 11:41 AM
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Xtreme X or spd/bus stop tune?

anyone compared the two? or an idea which one makes more than the other? they seem to be the two most used, or is there a better choice?
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Old 04-28-2012, 11:48 AM
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Why dont you get both and decide? Anyones race tune is going to net you similar power, probably almost the same because the stock injectors will be entirely maxed out with fuel. There is only so far you can go with a tune without having to upgrade injectors. Were not going to be able t tell you what tunes you like. However if you like smooth, clean, big power with spot on shifts chris' wil make you happy.
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Old 04-28-2012, 05:58 PM
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ive got the srl+ and it sounds like its fairly close to both those if not the same
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Old 04-28-2012, 06:18 PM
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As Greg alluded to, all of these guys' tunes are gonna be real close in "Peak Power" output as there is only so much power that can be had with stock fuel and air. The main differences are in the tranny shifting and how the power comes on. If you are splitting hairs, I can tell you it just isnt worth it and you need to go buy injectors to get more. JMO.
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Old 04-28-2012, 06:22 PM
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srl extreme will be in this category for all out power and I have to say it's impressive
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Old 04-28-2012, 06:32 PM
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Yes I have driven both the SPD and SRLX with stock injectors and they both deliver the same seat of the pants power level IMO.
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