A new X-3 will only hold 3 custom tunes, which is fine because once you try a custom tune you'll almost never use a canned tune again.
The SF3 holds 5 canned tunes and also hold 3 custom tunes.
Any well known tune writer can write tunes to suit your needs. Members ask all the time, who's the best. Well it comes down to personal preference, driving style, and if your truck likes the tunes. Tunes written for one truck may act a little different on another truck (different strategy, gear ratio, tire size, ect, ect)
With the 6.0, it's important to monitor EOT,ECT, fuel psi, and FICMv. If your running tunes then EGT. Also if you tow heavy, TFT.
Monitoring ECT/EOT, if the delta is 15* or more, start looking at replacing your oil cooler because it blocked up in the coolant passage side of the oil cooler. This will cause a domino effect, because coolant is restricted from reaching the EGR cooler. The EGR cooler fails/ruptures and you end up getting coolant into the cylinders. Now coolant wont compress in the cylinders so the weakest link is the head bolts. The head bolts will stretch causing headgasket failure.
Fuel psi, when fuel psi drops below 45 psi from idle to WOT, your doing damage to the injectors.
FICMv, when FICMv drops below 46v while cranking or engine running, your also hurting the injectors.
2004 F350 CC DRW King Ranch
X-3 tunes by DJ,QT,GH,ID,Gyphon FICM tuner,head studs,II Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,Snow Perf stage II,EGR delete,AD2,4" turbo back straight pipe,K&N intake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
Thanks to:JASONS REPAIR AND PERFORMANCE-TELFORD,PA.
"Are diesel pickups hot rods? Yes,they are-perhaps the most versatile hot rods ever made"---Diesel Power Magazine