Tuners
Thread Starter
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Tuners
I ordered up a Predator for our 2000 Expedition 4x4, 5.4L and all I have to say is WOW! The difference that just a tuner made is phenomenal. I think that the best part about the tuner is the transmission tuning. Instead of being able to go take a nap between shifts they are much firmer. Still not quite firm enough, but I really do not feel like taking apart the valve body to install a shift kit. I also bumped the shift point between 2 and 3 rather than the stock 4700rpm. Overall I am quite impressed. Now I can finally remove the cats as the rear O2 sensors are turned off (I don't even want to hear it from the guys who disagree with removing cats).
All in all I am quite impressed.
All in all I am quite impressed.
Senior User
Joined: Nov 2003
Posts: 467
Likes: 1
From: Where the war is...
What about the age or mileage on the truck?
Just wondering; when using these tuners, isn't age or mileage a factor in terms of the components (especially the transmission) on the truck? I'm just thinking that putting a bunch more stress on an already worn (even if a little bit) system be bad for it? Wouldn't changing shift points further down the road in a truck's life be harmful, or does it not really matter?
Thread Starter
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Originally Posted by vze2sgxa
Just wondering; when using these tuners, isn't age or mileage a factor in terms of the components (especially the transmission) on the truck? I'm just thinking that putting a bunch more stress on an already worn (even if a little bit) system be bad for it? Wouldn't changing shift points further down the road in a truck's life be harmful, or does it not really matter?
If you are careless with changing settings there is the possibility of messing things up but as long as you know what you are doing and are careful there shouldn't be a problem.
Senior User
Joined: Jan 2005
Posts: 196
Likes: 0
From: Franklin, NC
I have had the predator on my '99 Expy for the last 70k and wouldn't change a thing. It does advance the timing requiring 91 octane fuel or better, but I get on avg. 2 mpg better + more power. I have the made the transmission shift firmer and have Over Drive shift a little sooner for driving in the mountains. After having it on for a while I didn't really notice that much difference until I took it off. It really does wake up the engine and helps cut down on the shifting back and forth that mountains tend to make the auto tranny do. I give it tow thumbs up. Oh yeah, I forgot that it also reads DTC's. I have already paid for my programmer by being able to diagnose problems myself.
