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Power Strokes
6.7 Aftermarket
13-16 Spartan tuning
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[QUOTE="SpartanDieselTech, post: 1288580, member: 22311"] We've had several questions concerning how the 2015 transmissions are holding up to higher tunes, and thought I'd give you a guys an update. As I mentioned before, we smoked the trans in my 2015 F350 SRW during testing a few weeks ago, due to the weaker C35R clutch in 2015MY+. I've spent 3 entire days now working on the 4-5 upshift (yes, on one damn shift :morons:) for 2015/2016 files, and have made a LOT of progress. We started with a 4-5 shift that was taking 780milliseconds to complete (which is slow, and was burning clutches) and dropped that to 360- which is quicker than stock, even under 600HP worth of load. I can't say that the 15 trans is totally bulletproof at this point, but it is [B][I]greatly[/I][/B] improved from where we were at a month ago. I personally feel [B][I]much[/I][/B] better about these files going out, and have no hesitation saying that the casual racer shouldn't have any problems out of these calibrations and the 15MY hardware. Edit to add- getting the clutch apply time down to appropriate levels also got rid of that wretched 4-5 upshift "squeak" associated with the clutch slippage. I hated that damn squeak, may it rest in hell :flipa: [/QUOTE]
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