2005 6.0 1 ton uphill towing power

[2005AZF-350-HD]

I figured it was time for a post. I have gotten great info here so I am asking for some help. I recently bought an 05 F-350 6.0 with 100K on it. She runs great but when I pull my 26ft toy hauler with no toys or water (8k dry weight)I noticed that going up 6% grades it seems to lack some power. I also noticed that the fan kicks in all the way and the enging temp kicks up a little. I have a SCT livewire on the way and was going to change the exhaust also. I tow alot from Phoenix up into the Forest Lakes area and there are alot of hills and 6% grades. The longest is over 4 miles up. Any suggestions??? Thanks

Almost forgot...wide open it holds about 50MPH up that grade

[psd_va]

i haven't towed that much before up any hills, but 50mph WOT dosen't seem right to me.

[team.performance.enhanced]

i have the same problem with my '06.......just bought a 26' eclipse attitude toy hauler and when i turn it back to stock to tow it has no power. i got about 8 MPG towing it home from dallas. i drove it home stock because i actually bought the trailer the week before and it broke down 30 minutes outside of dallas. took it to the dealer and they told me EGR and cooler. had to take a rental car home and pick it up the next week. so i pick it up and decide to keep it on stock just in case something happens again. zero power.....not sure of the grade but there are some long tall hills between houston and dallas. couldnt keep it above 60 going up the hills. i love my truck and it is the best looking truck out of the big three but it might have to get traded in on a cummins. i cant afford that kind of fuel usage because i would like to travel a little more than from the storage to my house and back.

[mikeproc]

I have no problem at all gaining speed on any hill I've come across. I run 4in turbo back sct tuned by RCD studs and egr delete, but Even when It was stock it could pull up anything I wanted. Last trip out i was fully loaded averaging 75-80 I got 13.8 mpg done by hand. I pull a 23 foot 10k equipment trailer with a 04 ccsb. Something doesnt sound right.

[alwil]

subscribed

[Dave]

Shouldnt have any problem holding speed with 8k up a hill unless its a steep sum*****. We have a hill around here its known as 10 mile hill. Its a 8% grade for 2 miles straight. Ive hauled everything from skid steers to campers up it and never missed a beat

[StarDriver]

If your going to hold it wideopen, you'd better get guages in it. I've learned to not push the truck, just let it do it's thing. They have enough power to pull.

[loock1222]

I run a SCT tuner with MBRP 4" turbo back exhaust with no cat... I live in New England where we have nothing but hills and I never run above 1000 degrees on the EGT's while pulling a 30' 5th wheel that weighs about 10.5 K and sometimes I actually have to get off the gas....

[NCfarmboy]

With a good custom tow tune on that SCT, your problems will be solved.

[LDahlberg]

Newbie here, after reading couple of posts thought I might get some insight to my truck prob. I have a 04 4X4, 6.0. with 65000 miles on her. The guy who owned it before me had some kind of chip in it and blew out the top end. The local dealer fixed the motor, and took chip out.

I bought it and recently tried to tow a 7000 lb camper. It has same symptoms as others have posted....no power going up any kind of hill, won't go over 65 mph, and MPG has dropped from 16 highway to 7.9. Bad thing is I dont have any gauges on it, so cant tell what engine is doing.

Where do I beging troubleshooting this? Is the 6.0 just underpowered for that much weight? It is supposed to be able to pull 12,500. What would be a good chip to put in it? And lastly, do you need an intake, exhaust at same time you add a chip?

Thank you in advance for any help and opinions......