acdii

I discovered the tune puts out MORE power than the cooling system can handle, so if you plan to tow a heavy trailer up a 6% grade, be cautious on the go pedal. It can easily do 65 MPH up a 6% grade pulling 6500#, but the cooling system gets quickly overwhelmed. It overheated on me once, and went into reduced power twice. I returned it to stock for my return trip and while it couldnt pull the same grades at 65 MPH, it still was able to pull past 5.0 with similar trailers. Good engine, but man does it suck up the gas. I put the tune back on once I got through the mountains, and didn't have any more issues.

Just beware if you run a tune in the EB, don't push it up a mountain with a load, use it with caution.

One side effect of overheating and too much boost, there is a rubber fitting on the intake that blew. I heard a POP then HISSSS, and lost power. I pulled into the first rest area and looked around and found this nipple on an extension that was blown out on the bottom. I was able to get to my destination with the hissing, but it totally screwed with the fuel mixture and boost and threw a bunch of codes. Would have been nice to have boost gauges to see how much pressure the turbos where pumping in going up that mountain.

Boulevard

Wow! Your truck broke down or failed 3 times in one trip and you still think that you have those 5.0's beat. I bet the guys in the 5.0's are probably saying 'hey look, another broke down 3.5'.

altarocks

Fixate much? You're gonna blame the engine for overtuning? I didn't read anywhere in the OPs post any comparison to 5.0s.

acdii

Yeah that was rude, then again, he probably thinks the 5.0 is better. They are both equal. And for the record, I was not broke down, I pulled over once to cool down, top off some lost antifreeze, put it back to stock and continued on. Also gave us a chance to take in the views at the rest stop. The other two times, I turned off the air, and reduced speed. When that rubber whatever it is popped, I was still able to make it to my destination, just with reduced power and extra fuel consumption due to lost boost pressure. Thankfully I was already over the grades. I also saw a couple Dodge rams over on the side with the hood up, but most the most 1/2 ton trucks towing trailers that I saw were F150's.

But I can tell you this, even stock, the EB pulls better than the 5.0. I passed a couple with similar trailers on the way over the summit with stock tune. When running stock I never had heating issues climbing the grades.

berty

lol they are definitely not equal, the EB tows MUCH better! I hope you can see that Boulevard lol

acadianbob

The EB does tow better (or at least with less drama) than virtually any normally aspirated V8. It's the torque at lower RPM. Maximum "wide open" running may be similar but normal part throttle pulling/towing is quite different. This is not bashing anyone's V8; just a fact.

If you are pushing the truck so hard that it blew a "nipple" with tune boost that is out of spec, it is no wonder that the truck overheated.

I just pulled an 8,000 lb travel trailer up and over Vail Pass and through the Eisenhower tunnel at 50 to 55 mph and the truck stayed right at normal temps. And it never exceeded 3,000 RPM. With that kind of performance, I don't see the need for a tune.

redranger04g

We could have a thread starting with "Windshield wipers quit working..."

And would turn into "Shouldn't have bought an EB, 5.0 windshield wipers dont break down"

redcelica

I use one of these, my android phone, and an app called Torque (lite) to monitor my turbos. Works great and the app is free! Also let's you clear codes too.

https://www.amazon.com/BAFX-Products...luetooth+odbii

acdii

Definitely too much boost with the tune, which is why I started this thread, hence use with caution. It is too easy to overboost going up a grade. Ran back on stock tune and it pulled just fine, no where near the output as the tune, but also not overheating as with the tune. Even stock though, it pulled past other F150 non EB.

What I meant about them being equal though, they both can pull a trailer just fine, but the EB is better at it hands down. The 5.0 has to scream to get to its HP and torque, but it still puts out a good amount of it when it does.

I have the 87 perf/tow in it now, and getting 22 MPG going to work. The truck doesn't know what to do with itself with no weight back there.

CP34

I'm not sure which tuner's tune you are running so I won't name mine as to not start a pissing match with anyone.

I just pulled my camper and the things that go with it, I'm guessing around 8k lbs. with the 91P/T. At 70mph the highest boost I saw was 16.24#'s and it did get a little toasty every now and then. The engine coolant got as high as 240F and the tranny got up to 215F. I wasn't in the mountains but I was anywhere in between 4500' & 6000' elevation with some decently long 6% grades in 90+ degree weather. Averaged a prius like 6mpg, thank God for that 36 gallon tank.

Granted I'm also on a 2" level/lift with 295/65/20 Nitto TG's so that doesn't help with my towing.

I think as long as you're careful or not going straight up the side of a mountain most people will be fine towing with a tune. But with that said, I might try it on the stock tune next time just to see what happens.