BlackBoost

It's the other way around. Tunes change engine parameters which theoretically could cause many many issues, and makes it so much easier to Ford to pin the blame on that. Good luck fighting that one. Make sure to let us know who won the court case and who ended up broke from court and lawyer's fees

11screw50

A tune increases HP and TQ, easy enough to say that the parts installed are designed so that given manufacturing tolerances they will perform to expectations. Exceeding factory hp/tq levels caused the part to fail.

Also, just because a tune works great on 99% of the trucks it has been on, there is always the possibility that your truck is the one with parts at the wrong end of the manufacturing tolerances that cannot handle the increased stress (although they may have been fine at factory levels).

Not disagreeing with you that technically Ford has to PROVE that the tune caused the failure but lets face it, they have engineers and lawyers on staff who can probably find a way to back up the claim. When you're standing in court and their experts testify as to what caused the failure, a response of 'xxx has the same tune and his engine still runs' is not going to work.

Also not saying that tunes are bad, tunes are great but before flashing a tune, one should understand that there is a chance that it will cause a problem (however small). If I had an EcoBoost, my truck would be tuned already. Not much gains to be had on the 5.0 from what I can tell so no tune for me.

<-KJP->

Couple more thoughts.

When you disconnect your battery, your ecm records an event very similar to an event when a truck is tuned. Some owners do that often to clear out adaptive learning.

When you get a tranny calibration or steering calibration loaded it records an event similar to a tune being loaded.

When you use a calibrator to adjust for tire size the ecm records an event similar to a tune being loaded.

My guess is a typical dealer does not have the expertise to distinguish between those events... however if a ecm was sent to ford they would have to dig quite deep to distinguish.

Most times, based on what I have seen on this forum over the last 5+ years Ford needs the engine to examine...but not the ecm.

Based on my experience tunes can make your truck run cooler temps, help out with carbon deposits, rune more accurate fuel to air ratio.....you do not need to run "***** out unsafe tunes" to enjoy extra performance. These engines have plenty left on the table.

Someone on this forum who used to work for Ford and still has great connections to Fords engineers stated that they tested the 2.7 Eco at 500Tq with no ill affects.

I am very convinced this engine is built like a "Brick-****-HOUSE"

My favorite engine so far in the f150.

Takeda

The PCM has FLASH memories that maintains data, which doesn't get reset when power is removed.

<-KJP->

Not disputing that..but...you got to go deep to distinguish between tranny reflash, steering or tire calibration or just a baisc battery disconnect.

Dealers don't have the talent to distinguish, and like I said Ford usually only wants the engine.

Takeda

The engine alone won't tell Ford what the max RPM, max boost, or any other parameter was.

gymratt

Buy a 3.5

<-KJP->

Most reputable tuners do not exceed factory boost levels...they move the boost around to start sooner or hold longer(some increase it moderately)...most are struggling to increase boost for the 2.7 Eco.

<-KJP->

Where I live that is a $2000 + tax option on the engine. Which has had isssues with timing chain stretch + other issues. I have had one.

For a mare $500 (tune) I can have a 3.5 and then some ;-)

MNSportsman

iTrader: (1)

@KJP - Thanks for the informative posts on this topic. Everything you've stated I also came across while I was doing research on deciding to tune my 2.7.

Having been new to tuning (always drove Toyota’s prior and not much demand there) I didn't fully understand the ins and outs, the major players, etc. My initial thought was that I didn't want to void my warranty, however, after doing a lot of research and talking to others I decided it was something I truly wanted to do. My opinion is that manufactures leave power on the table for future marketing and at the same get hamstrung by regulations. Personally, I want access to the performance the engine can safely make.

I realize there's a small risk of being on the hook if something major does go wrong - That's something I'm willing to accept and be accountable for end of story.

Having had my LMS tune now for the past few days I honestly feel like the truck runs better than it ever has. I couldn't be happier.

What I don't understand is the hysterics that the same old members display anytime the topic comes up. It almost seems as though they try and make it into some sort of moral debate.

I agree with one of the other posters that they should stick to bloviating about who makes the better floor mat...