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Discussion Starter #1
Heres the problem I have a 2002 Duramax With 4in exaust a superchip and a K&N open air box the truck goes great have not been beat yet. The truck weights in at 9875lbs with out me in it My highest top speed I can reach is 195 kph Is ther e a way I can get about 20kph more.??? I have looked into gears but not many options for a dually I would like a 308.
 

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swith out the K&N filter for a better filter such as AFE,Volant,S&B or Amsoil dry filters and the reason i say get rid of the K&N is due to they let lots of air thru they also let to much dirt thru cause problems with your turbo..i have a PPE programmer on our trucks and both ofem will reach 120mph no problem(even the EXT. Cab dually with the 3:73 gears)and my 2500 gmc has seen 130mph but that is very scary..
 

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Hi, I'm Earth. Have we met?
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Yeah almost all of the down loader type tuners can raise the speed limiter. the only ones im not sure about are the hypertech and super chips tuners?
 

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My hypertech max energy programmer allowed the speed limiter to be changed.
 
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