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It is known that tuning this truck will give ~40 HP and ~60 TQ, even on the stock airbox. It's interesting to see the difference pre-tune, but almost no difference with the Roush box post-tune. Maybe the Roush box leans out the stock AFR to bump stock numbers, but a tune has them leaned out...

Hello @JeffD The issue you are experiencing is common, and some users are more sensitive to it than others (that good butt dyno). I consider myself to be very sensitive to it. Anyway, it is the biggest complaint I have with the Ranger. Feels like something sloppy in the drivetrain "catching...

Okay @NCHilbilly, the reasons I believe you are trolling are: 1. You only complain, and don't provide proof of your issues. You just have pictures of a Ranger. 2. You claim these issues but don't take any steps to solve them yourself or with the help of members on here. 3. Your issues are...

This guy has zero problems with his Ranger. Every thread has wild claims with zero proof. He/She/It/They whatever is a troll and @AzScorpion you should ban this knucklehead.

ALL 5g Rangers have the new design. The OG 2.3 litre Mustang engine used the slotted bore bridge design unlike the 2.3 litre Focus RS and Ranger which have a cross-drilled bore bridge design.

Hello @NCHilbilly My truck has had some rusty factory Motorcraft plugs and I have switched them out. The new ones don't look to have the same problem, but I also check them more often now. My driveline is also "lurchy" when cold, but many others have this symptom with many more miles than I do...

You're welcome.

The lack of initial spring tension is by design. The compression pressure from combustion gases "push" our "loose" rings against the cylinder wall creating a better seal than a ring with high initial spring tension.

@21Blackout have you ever seen or heard of Ford denying warranty claims based on their own Ford Performance tune? I.E. has damage ever occurred on a Ford Performance tuned vehicle, and that damage was determined to come from the Ford Performance tune?

The clunk is suspect. It could be a dry slip-joint or the hard downshifting/upshifting between the first few gears. The issue seems to vary based on user sensitivity and specific truck. I think I am sensitive to it, and that my truck has this symptom moderately. Others might not be very...

I think @Msfitoy mentioned he was going to stick a scope to look at his valves. Since his is one of the highest mileage Rangers on here, it should provide valuable data.

You didn't even bother to read the thread.

Please post your photos if possible.

I'm sure just a mild coating of fresh engine oil will do wonders for rust prevention, but something in my mind tells me that I should never coat plugs going into an aluminum head. I don't know where I got this or if it is even true, but for some reason aluminum head + coated plugs = red flag.

No cover. It was every plug. I park outside and wash it frequently. I've only rinsed off the engine bay once.

Out of curiosity I pulled my plugs, and they were all rusty on the threads. Not to the point of seizing but bad enough that I didn't want to put them back in. The plug tips looked great themselves.

This x1000. All it takes is a little google-fu. There hasn't been one case of Ford blaming their own tune on any ecoboost vehicle and subsequent denial of warranty claims. There was a member on here that had a 5-Star tune that was denied warranty. This is enough for me to not go aftermarket. I...

@MountainGoat the Livernois tune is the only aftermarket tune I'd consider :thumbsup: Lets clear up a couple misconceptions about the FPP tune though. You don't need a dealer to install it, and you can switch back to the 87 stock tune anytime you want. I do it all the time.

Dude, you have been making presumptions throughout this entire thread. First you presume there are no dynos of the FPP tune which you were dead wrong. Then you look at a California dyno sheet and presume the octane to be 93, again you were dead wrong. 93 Isn't available in California. The FPP...