Towing Limit on Perf Tune

[ticopowell]

I don't know if Bill or Edge put in the limit, I would imagine that they tested the load limits in actual vehicles by loading them up and seeing how the engine responded. That or they just guessed ... If you load the truck up with that much weight you shouldn't see a problem, and maybe even a little more than that, but I wouldn't push it too far. What are you carrying that weighs so much?
Also I wonder if there is a difference between towing and in truck weight... it might make a difference where the weight is located... but that doesn't make much sense to me so I don't see it really making a difference.

[ak_cowboy]

Originally Posted by ticopowell

Also I wonder if there is a difference between towing and in truck weight... it might make a difference where the weight is located... but that doesn't make much sense to me so I don't see it really making a difference.

If you load the truck up with that much weight you shouldn't see a problem, and maybe even a little more than that, but I wouldn't push it too far. What are you carrying that weighs so much?

Yeah, that's what I was curious about too...

What do I carry? Here's a load of firewood...


Here's 2000lbs of fertilizer...

[Longshot270]

The performance tunes are only rated for the 2000-2500# range because the engine is set to run a little leaner to generate more horsepower. Adding more weight than intended will make your temps run much higher and risk all the damage associated with over-advanced timing.

The tow tunes are designed to help manage the temperatures and produce more torque by making the fuel/air ratio more rich. The timing is also slightly further back to keep from knock under the higher load.

[ticopowell]

Originally Posted by ak_cowboy

Yeah, that's what I was curious about too...

What do I carry? Here's a load of firewood...


Here's 2000lbs of fertilizer...

Good looking truck , and yeah, you might be over the 2500#s with the firewood lol... and what longshot said makes sense to me. is that a full chord of wood or 3/4? sorry for the randomness...

[ak_cowboy]

Thanks That's probably a full cord, didn't bother to cube it all out lol

I run my 87 tow tune all winter cuz it doesn't make financial sense to be burning winter blend premium and idling all the time...but I was just curious where the 2500# limit came from.

[88Racing]

also posted on f150online...