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bikernut
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Vehicle: 05 Chevy Silverado w/Max
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From: NH

Posted - July 1 2007 : 5:02a

I am getting ready to pull my new 44' toy hauler to South Dakota for a much needed vacation the last week of July and I have the option of using my daughters boyfriends Hypertech Three Stage Tuning system for this. My question is which should I put in the 35HP, 65HP or the 100HP? I am not going to be doing any other mods just this chip. I am starting from New Hampshire so there will be hills to start with, I don't want to do any damage but would like to boast my power and up the fuel mileage pulling this 18,000# Fifth Wheel trailer. Again this is just going to be for the trip out and back with us using my Harley Motorcycle converted to a Lehman Trike so there won't be any truck use out there as this is a motorcycle vacation. I know what you are thinking and I would only take the bike but the wife likes the comforts of a moving home on wheels after a days of riding.
So members what do you think will be my best option? I would like the chip to be programmable on the move but this one is a 5 minute down load for each different setting. Beggars can't be choosy!

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Jason
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Posted - July 1 2007 : 12:30p

do you know the break down of each stage? (changing shift points,pressure,rev limits,etc)

bikernut
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Posted - July 1 2007 : 6:40p

I know nothing about the shift points and it seems to work fine in the other truck but he has to go back to stock so I can down load it to mine if I do so.

Mort
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Posted - July 1 2007 : 11:15p

If you don't have any extra gauges (pyrometer, tranny temp, etc.) I'd probably stick with the 35hp, maybe the 65. You don't want to cook your stuff.

DrSpeed
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Posted - July 2 2007 : 1:13p

Quote:

Originally posted by Mort

If you don't have any extra gauges (pyrometer, tranny temp, etc.) I'd probably stick with the 35hp, maybe the 65. You don't want to cook your stuff.

Mort's right..before you hotrod your diesel, the best thing to do is to get a set of gauges.

But, since you're not doing that as it's only temporary, do understand that you run the risk of blowing up your engine, even at the 35 hp tune...especially while towing.

There's only a certain number of things the tuner will do, and that's advance your timing, and increase your injection pulse width.

The former will allow it to run cooler, but may increase cylinder pressure.

The latter generates more power, but at the expense of increased heat (EGT).

So, I hope this makes you better informed to make an educated decision.

From what it sounds like, I'd rather just drive the truck stock with the toy hauler...

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