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I've had a 2015 3.5 NA FWD for about a year and a half now..got 42k miles now. I have been thinking seriously about getting intake manifolds ported by the guy in SE US because I've read of 2 sec 0-60 reduction on an Explorer with addition of 73mm throttle body..is this not true? It does seem like quite an improvement in performance from a mod that I would think would be useful with other mods. I'd like a tuning device, but it seems they all have good and bad reviews. The throttle response is more like drive by rubber band than by wire..it sucks. Transmission shifts seem fairly tidy, but they're kind of here or there. Any advice to offer?

After much thought, I think I'm going to replace the 245/60r 18 Michelin Latitudes with more 18s. My local America's Tire is suggesting Yokohama HTX or Michelin Defender. They tell me the Yoko has a stiffer sidewall(!) and wet/dry traction is about the same as Mich. This choice is based on no seat side bolsters or 5-point harness, stock size brakes, budget, old wife, etc. I would appreciate any comments or suggestions from others. TIA, Bill

Hello All, Recently bought a 2015 SEL Edge with 3.5. Would have preferred Sport, but did not find "the one". Have so far only changed crankcase oil to to Valvoline Synth and coolant at 38K miles. Tires and brakes next.