Please bear with me. I know there are probably 100 posts pertaining to towing with tuners, but I have two specific questions :help: . I ordered a Predator yesterday for my '05 GMC CC 4x4 D/A. I read on the Diablosport website that wiht the 40 hp tune you can tow as per mfg. recommendations :blahblah: . They recommend towing only 8000 lbs on the 65 hp tune.

My 1st question is this: Is that an 8000# trailer or 8000# total? I know that they recommend exhaust mods &/or a pyrometer for towing with any tune.

I do not plan on any more mods at this time. I frequently tow a gooseneck horse trailer that probably only weighs 5-6000# loaded. I will occasionally tow a 25.5 ft 5'er that probably weighs in at about 7500#. Question #2 is this: Will it be safe to tow the horse trailer wiht the 65 hp tune and the 5'er with the 40 hp tune without having to worry about egt's?

Please chime in with your thoughts.

Thanks in advance for your help.

This site is great :ro) !!!

It will really depend. How high of altitude, how steep a hill, how heavy is your foot? On level ground you will be fine, it's when you want to pass a car going that is going 70mph on a 6% grade at 5000 feet that you will start to run into trouble.

There are guys who tow using 200+ HP tuners. They just don't bury the throttle for 5 minutes straight.

Your best bet is to get a pyrometer and watch what the truck does the way you drive and adjust accordingly. Me? Well, since I removed the Edge, I no longer have a pyro, so when I tow uphill at high altitude with a 100+ hp tune, I just take it easy.

cowdoc, you just spent about $40k on a truck, man there are no stupid questions!!! :D

McRat, you are too humble. Tell the guy you are driving a freakin race truck!):h Upgraded tranny, exhaust, etc.??? You could likely tow a small house with your setup! :D

cowdoc, don't put stock in any manufacturers claims about their programmers and tuners. They are out to sell units and telling folks what they want to hear is par for the course. :mad:

There are those that will tell you to install an EGT gauge even when towing stock, moreso when running a programmer. All programmers are not alike, some tend to run higher EGT's even when not pulling. Every tuner/programmer manufacturer puts a disclaimer in the front of the owners manual that use of their equipment is at your own risk and they cannot be held liable if you blow your engine or void your warranty. :eek:

Regarding your 8000 lb question they are talking about the total weight of the trailer, this includes the base weight of the trailer and any contents that add up to 8k lbs. NO, you will not be able to tow either of those trailers without having to worry about EGT's. Fact is without an EGT probe/gauge you just don't know, period, the end! :( Why risk it?? :cool:

The gooseneck will tow easier than the 5ver due to the 5ver having a larger frontal mass and more drag. McRat asked the question about altitude for good reason, the higher the elevation the harder it is to dissipate heat. Good discussion on this in the LLY overheating thread. :rolleyes:

An EGT probe and gauge will run you around $250-$300 installed. Your putting a lot of money in your truck. Eliminate any guesswork, know when to back off, and ensure you get the maximum life out of your motor. :) Excessive EGT's can cook an engine and seriously erode its longevity.

JJ's out! Later. JJ :)

Please explain why it is harder to dissipate heat at 5000'? Which heat load specifically? Later! Frank

less air. Airflow and air density is what removes heat.