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Go Back   Chevy and GMC Duramax Diesel Forum > Chevy / GMC Duramax 01-04.5 LB7 Forums > 01-04.5 LB7 Performance Parts Discussion
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01-04.5 LB7 Performance Parts Discussion Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising

 
       

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Old 10-22-2009, 07:12 PM   eBay Motors   #11 (permalink)
shrummyboy
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so if i gotta stock transmission i should leave it on level 1 or 2? until i get a stronger transmission
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Old 10-22-2009, 07:39 PM   eBay Motors   #12 (permalink)
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You should be ok on level 3 or less on a stock trans, 4 if your nice to it. Level 2 is 50, level 3 is 70 hp, level 4 is 90. Let me know if I can help you with one.

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Old 10-22-2009, 10:57 PM   eBay Motors   #13 (permalink)
shrummyboy
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well i drive 90 miles roundtrip to school so im tryin to get good gas milager if i do alot of highway driving, will 4 be aight? i want it to roal some coal to
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Old 10-23-2009, 06:50 AM   eBay Motors   #14 (permalink)
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The higher the hp setting the better the mileage. That is what I have found in my testing of tuners. That of course is with the right driving habits.
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Old 10-23-2009, 11:08 AM   eBay Motors   #15 (permalink)
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I agree to a certain extent; I have a qs2 and my mpg drops dirastically when going to the 110 or 135. the 90hp tune seems to be the G spot. Be careful when running that one on the highway too, I was provoked last weekend and I think my converter was having a hard time running like that. Cooled it out after that.
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Old 10-23-2009, 05:19 PM   eBay Motors   #16 (permalink)
shrummyboy
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so if i run the 110, but stay easy on it, for the most part, and dont have it at WOT between 4 and 5 gear....ill be aight
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