Towing with Quad Tow Box

[KSHall]

I'm cosidering buying a Quad Tow Box (65 hp) for my 05 truck and was looking for some information. Have any of you guys towed with Quad tow box on a 3rd gen truck? If so can you give us a report? How did it do , a little difference or a big difference or somewhere in the middle?

How about your Egt's, your mileage loaded and unloaded. Does it have better throttle response and so on.

 

[prestonmck]

I will be towing a 28ft. pull trailer to Yosemite next week and will try and let you know when I get back. I've had mine on for about 1,000 unloaded miles now and still love it. A substantial lighter throttle pedal and can pass in 6th gear with ease. Recently drove from central Ca. to Calistoga,(about 630 miles round trip) and hand calculated 19. 73.

 

[prestonmck]

The highest EGT I've been able to achieve so for has been 1,279F unloaded

 

[Tryingit]

For a few bucks more you might want to consider the quad standard. I have not yet towed with it but will in two weeks. The advantage to having the standard box is you have the 30/hp 60/hp and 100/hp and of course you have the off position which is nice. Even when the unit is off you still have boost fooling which allows addition boost from your turbo.

 

[BHolm]

I personally like the significantly cheaper tow box. My truck is an automatic and I don't even want the temptation of a 100hp setting, no thanks. For $300 the tow box is timing and duration only, another big selling point for me since raising line pressure is not something I want to do. Seems like great bang for the buck as is and if I keep this truck I will be adding one. Sounds to me like there is some milage gain to be had as well.

 

[BILLUA]

I just ordered a Quad 60 hp box to stack with my TST. I am just not happy with the EZ stack and want to try another box before going back to my favorite stack... TST/BDDL. My Bully Dog is the good one. . Version 1. 1 and I love the low end that comes up with!



I have tried just about every combo now for the '05 except the quad stack... So, in few weeks look for a couple of boxes for a good price in the classifieds. .



Cheers, Bill

 

[prestonmck]

I don't believe the 65 hp tow box is just timing and duration. They add pressure and boost fulling as well. I See a max of about 40 psi now from the turbo.

 

[BILLUA]

I don't believe the 65 hp tow box is just timing and duration. They add pressure and boost fulling as well.

That is absolutely my understanding as well! :-laf

 

[AMassaro]

Definately a mild pressure box as well as boost, timing, and not sure about duration. I have hit 1400degrees empty and 42psi boost...

 

[TX Gooseneck]

When I had the quad race box on I generally ran in L1 (60hp) With the stock turbo I would see over 1400* with ease. I upgraded turbo first and left everything else stock. After 20k (around 1. 5 months of driving for me) my factory injectors fractured - I can only assume the pressure is what did this. With the upgraded injectors and new larger turbo I had to exhibit a lot of self control. In the L1 setting I would crest 1450* and in any setting higher I couldn't run 5th or 6th out without shooting past 1600*.



During towing, I either had to turn the box off or run flat ground in L1. Not sure why it ran so hot on my truck, but it did. I got rid of that box, put the TST on and am absolutely thrilled.

 

[RIngle]

I was considering the quad box too but a friend of mine put one on his 03 and got a fuel leak right away. What boxes out there are just timing and duration? Do they work and worth the time and money? Not interested right now to go 100hp, just a little extra kick.

 

[qzilla]

I am not sure you can say that a pressure box is the definate source of a leak or even cracked injectors. Did your friend get it fixed? Has it leaked again? I know it is easy to look at an aftermarket part immediately if something breaks, but there are quite a few bone stock trucks that have the same exact failures. How do you explain them? I really wished the Big 3 would get a handle on the injectors, but I think it is something we are just going to have to live with. I have spoke to several engineers and they seem to think that poor fuel quality attributes to a lot of injector failures. They say it could be the fuel, how it is stored etc. They also said people with regular fuel filter changes seem to have way less problems. Even if it is not completely dead they recommend changing the filter about every 2 oil changes 6-7K miles or so.



Usually what happens is that if you have a part that is failing or not operating 100% the aftermarket part can certainly help it fail. Some people do not like pressure and some people do there are big upsides and some downsides if it is not done properly.



Duration and timing works good, but duration gets really hot if you do not have the turbo and other mods to go with it.



For those that do not like pressure you are certainly going to be upset when they switch to the Bosch 2 system which operates in the 29K-30K range! Our 06 LBZ duramax uses a lot of pressure from the factory!



Just food for thought?

 

[KSHall]

Well then what is too much pressure? How much is it stock and how much is it with the tow box? I don't want any failures or any trouble, I don't have time for it. But I would like a little more power though, gee, I guess that is how it all starts huh?

 

[TX Gooseneck]

Pressure is not a bad thing, but excessive pressure, apparently used to often can be. I think there is a pretty solid history with pressure aided failures.



If you want reliable without questions go with timing/duration (VA, TST or Edge Juice)

 

[qzilla]

I agree that duration timing is a viable answer. As a matter of fact we have one in the works, but there are also downsides.



People getting timing errors can also have issues. If something messes up in the timing circuit it can be much worse than an injector. Also adding duration also considerably changes the duty cycle on the injector. Like I said it works fine, but it still works the injector harder.



Around 26K is about the limit for bulletproof reliability. A stock 610 truck will get to around 24. 5K pretty easy. Our race box will make 26. 5 and 27K on a spike. Our tow boxes stop around 25K.



Remember it is not really about peak pressures although they can hurt you in some instances. You need to look at the curve of the pressure you can tell how the module is working. Some have minimal resolution and they get to the 24K range quickly and you are driving around with a lot of pressure all of the time. In our case we have tons of resolution and map our curves so that in normal driving instances we keep the pressures very low. We do alter the stock curve but at cruise you will be towing at a very similar pressure to stock.



Once more of our monitors get released and a lot of people start monitoring the Rail everyone will see more how the rail pressure works. It is not always like you think.

 

[Mark Craig]

KSHall,



Take a look at the VA or Edge Juice/Attitude, they keep the pressure down to save injector failures. Plus if you tow mor ethan say 7000 lbs you need a set of gauges anyway, the Edge has them built in and is a great piece for easy install and monitoring. It even has EGT defueling so if you're not paying attention it is for you. They have been around and have the engineers and technology to make sure it works for you too. Plus the membership here at TDR will tell you that their customer service is excellent too, if you ever need it that is.



Mark @DPPI