Superchips updated tune - Page 2 - Hemi Truck Club
 
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Old 12-22-2007, 07:33 PM   #11
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Superchips updated tune

vacation man left the building

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Old 12-22-2007, 08:14 PM   #12
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Superchips updated tune

I just returned from my vacation.....it was great other than my truck lost great gas mileage that I used to have before I did SC updated tune....I reset it to stock and got my mileage back....so I am checking with SC to see why that is....good thing gas prices are dropping if not I will be force to sell my SC and live with just stock...
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Old 12-23-2007, 02:09 AM   #13
 
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Superchips updated tune

I would try to give it some miles. Could be that since retuning, it might be slightly on the rich side.
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Old 12-30-2007, 06:17 PM   #14
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Superchips updated tune

This is what I've found, MDS on my truck is not engaged, its going in and out. That is how I am loosing my gas mileage. I reset it to Stock and works fine, I think something in the updated tune from SC is causing this problem. I am checking with DCT to see if there is something that I am doing that is wrong or if there is something else I need to do. Before the newest update was install all the tunes that I got from SC worked well with MDS. Now I tried few different speeds like 55/65/75 and all the same. Truck will kick into MDS for 30 seconds and out of it, then it will go back in and out again, I tried it using cruise control and the same problem. I remove all the tunes and went back to Stock and MDS will stay engaged at 55/65/75 so I know the issue is not my truck, instead its the latest tune.

Any ideas?
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Old 12-30-2007, 06:39 PM   #15
 
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Superchips updated tune

Hey man...I just got my SC 3815 on Friday and installed the 87 octane... Saturday morning I did a road trip to Shelby, NC (240+ miles) and I noticed the same thing..my MDS got wacky and was kickin in and out but like every 10 to 15 seconds, with the chip the MDS is a little more jerky, and with the intervals of it going in and out, my wife was complaining big time. It made for a very umm tense road trip. ...I ended up losing gas mileage big time!.. 16.2 mpg and it was all non-stop highway.
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