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Old 08-18-2005, 01:48 AM   #1 (permalink)
dwightfehr
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will programer hurt my new 05 duramax

I bought a new 05 duramax. My local performance shop installed a bully dog pup programmer, they set it to 75 horsepower and the truck works awesome, improved power and fuel milage. But now the engine rattles loudly at idle, and slow speeds. Will this hurt my truck? Please advise..as we are new to diesels! ..Thanks..
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Old 08-18-2005, 09:21 AM   #2 (permalink)
jetboatjockey
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to many varables, are you pulling, hot rodding, etc. use common sense, do lots of search subjects. lots of info here. max is tough.
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Old 08-18-2005, 10:13 AM   #3 (permalink)
AndrewFessler
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A programmer will change a number of engine parameters. If you think your engine is nosiy, it could be the programmer.

Remove the programmming and drive around for a day and then decide if it is still "noisy". Diesels are noisy.
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Old 08-18-2005, 02:22 PM   #4 (permalink)
scottdiesel
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dealer help

Quote:
Originally Posted by dwightfehr View Post
I bought a new 05 duramax. My local performance shop installed a bully dog pup programmer, they set it to 75 horsepower and the truck works awesome, improved power and fuel milage. But now the engine rattles loudly at idle, and slow speeds. Will this hurt my truck? Please advise..as we are new to diesels! ..Thanks..
Your dealer could definately answer your question about your programmer.
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Old 08-18-2005, 06:45 PM   #5 (permalink)
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Scottdiesel means ask your performance shop powerpup dealer, not your stealer dealer! Don't go back to your stealer dealer with the powerpup program loaded asking questions about it. Don't even mention you have one and always restore it to stock tune before you go back for service.

Just wanted to make sure you were clear on this becasue I don't think you would be happy with the reaction from the stealer dealer.
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Old 08-18-2005, 07:41 PM   #6 (permalink)
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Before getting too carried away with what your programmer might be doing, I would check for loose shiiit in the engine compartment. It isn't uncommon for something to have not been torqued and came loose on your rig. The reason you don't hear it at higher speed is that the engine and road noise are drowning it out.

I haven't heard of too many people with programmers complaining of rattling noises. That usually comes from a physical part not an electronic program. Just a thought before you start spending time on mechanics and phone calls.

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Old 08-18-2005, 08:41 PM   #7 (permalink)
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Your programmer is doing it. The power pup has lots of timing in it and thats where the rattle is coming from. I see you are from Canada....you think it rattles now just wait till it gets cold. The predator may be a better choice...less timing and no rattle. Apparently they just updated there programming too. Might want to check out a supporting vendor for one of these. I personally run the PPE tuner but also have a predator....I like them both.

ps: I personally don't think the timing rattle hurts anything, some here may disagree.
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Old 08-18-2005, 08:47 PM   #8 (permalink)
dwightfehr
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Quote:
Originally Posted by dpower View Post
Your programmer is doing it. The power pup has lots of timing in it and thats where the rattle is coming from. I see you are from Canada....you think it rattles now just wait till it gets cold. The predator may be a better choice...less timing and no rattle. Apparently they just updated there programming too. Might want to check out a supporting vendor for one of these. I personally run the PPE tuner but also have a predator....I like them both.

ps: I personally don't think the timing rattle hurts anything, some here may disagree.
Hi dpower,

Yes..I do know that its caused by my programmer. What I want to know is will this programmer damage my truck? Because I sure like the extra power and the correction for my speedometer for 285 tires. Also the big increase in fuel milage when pulling my 5th wheel. The only work this truck does is pulling my quads, fifth wheel and boat combo. Otherwise its a town truck. It increased my towing fuel milage 3 miles to the gallon and empty I believe 5 plus miles to the gallon.

Thanks for all the advise everyone!
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Old 08-18-2005, 08:53 PM   #9 (permalink)
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dwight--dont worry its fine...

***not hijacking***
dpower -- how do the PPE and the Predator stack?
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Old 08-18-2005, 10:44 PM   #10 (permalink)
dpower
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Since the ppe and predator are both tuners you can't stack them. You can stack a harness type box and tuner. Through trials and tribulations and other members here help (Mcrat in particular)....the ppe hot xcellerator and van akken harness box has yeilded the most power for the lly. I have an ugraded tranny and stacking on a stock tranny=bad idea. The predator tuner is also a nice unit. Its features are pretty cool and it also stacks very well with the Van akken. If you want to stack......save up some $$$ and get the tranny done first!
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