I've got a Superchips flashpaq tuner, Airaid intake with K&N filter and exhaust and my truck did just fine towing a 23' car hauler loaded down when we were moving. I just put my tuner on the tow setting and it did just fine. And all of those items cost less then $1000. You would even have a little extra money for something else or even go with a better intake and exhaust.Your truck should tow that trailer with no problem. Another thing you can do is go to Troyer Performance's web site and it gives you dynos of different things such as pully's and efans and look at the gains.

 

The factory roush tune is pure crap. Period end of discussion. As I have said before, anyone that says that tune is "fine" obviously has no qualifications to recommend anyone anything.

Keeping the air fuel rich to keep the engine cool works great on weekend warriors and race cars, but for a daily driving truck that you tow with...NO!

E-fans are plenty capable of keeping a truck cool while towing heavy loads. Get OEM fans off a factory high performance vehicle or a truck. They flow MASSIVE CFM compared to most aftermarket setups. With the correct and proper installing E-fans will provide plenty of cooling and long life. I have a duel fan setup of a dodge(cant remember which one now) that literally will suck a paper towel that is 3 foot in front of my mustang up into the a/c condenser.

Stay away from gears? WTF for? These trucks don't have enough gear from them in the factory IMO. Options should be 3.73 or 4.11's. 4.56 gears would be a little overkill IMO on factory tires, but still do able. You have to remember back before OverDrive trucks came with 3.55's, 3spd auto trannys, and 28" tall tires. They wind their big blocks up and still pulled 10-12mpg while just driving or towing.

 

My offer still stands from our last discussion on this. I tow 6000 lbs at 11000' DA on a 7% grade for 5 miles at 75 MPH and you do the same. Let's see which one makes it to the top in one piece: my stock Roush tune or your 12:1 AF "supertune". Yeah, that's what I thought. I hope you have AAA because it's a long walk to Vail.

One more thing RonB, the Roushcharger is warranty-friendly on your 2008. Good luck on whatever you choose, but my advise is to go with a real power-adder and enjoy the ride for a great price. There's more to life than just raw power, and Roush does make a nice, safe, driveable tune that will last for 100's of 1000's of miles trouble-free.

 

I've read statements like this for a few yrs
there isn't a thing wrong with that tune.

it sucks because it is so darn safe...so safe in fact that Roush supplants the factory warranty with their own 3yr/36k warranty.
it sacrifices HP/TQ gains to ensure the motor can do what you want/need safely. but still nets you +112 crank HP.

 

btw, with the Roush, you aren't boosting 3/4 of the time. Only when you plant your foot.


so when that truck/trailer is up to speed and cruising...no boost at all.


For those short term occasions when you plant your foot, you'll get that extra boost you need. You might suffer a bit of heat soak long-term though.

 

That's quite true. I actually am noticing an average of 15 MPG pulling heavy loads up and down mountain ranges and that really surprised me the first time out. Boosting allows a more efficient tow. All the torque and hp up hills and stock cruising efficiency on the straights.