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  #21  
Old 02-10-2012, 08:56 AM
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snrusnak snrusnak is offline
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That is pretty good claimed hp numbers. I pull a camper, and I could use the torque. How much are we reducing the life expectancy of the engine?
This is really a "he said she said" topic lol. IMO you don't reduce life at all. That said, if you drive it like it's a formula one race car because it's tuned, then yes it's not going to last as long. But if you did that stock then it wouldn't either. So it really makes no difference, all it does basically is add timing advance and maybe changes fueling slightly. I've several friends that have had 3rd gen hemi rams that ran over 100,000 miles with their SC's (always tuned with 91 tune) and they would race them at the track often, and when they sold the trucks they had no problems. My friend's camaro has like 160,000 miles he's had the diablo and SC for over 100,000 miles and races his car a lot and has had few problems (none really related to tuning.....he had a rear differential issue, a cracked flywheel, and bad rear main seal leak...none caused by tuning).

Just make sure you use the correct octane for the tune and you will cause no damage.

One thing to make note of: The SC gives you control of torque management, and if you disable or reduce torque management you can possibly shorten the life of your transmission. Now like I said my friend's have had no issues with their 3rd gen's, but my point is that if with factory tuning the trans would last 1,000,000 miles, maybe with the TM disabled it would last 500,000 miles. So it may not matte to you, but just something to be aware of. You don't HAVE to mess with the TM, just an option.
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  #22  
Old 02-10-2012, 09:01 AM
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Sweet, thanks for the advice.
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  #23  
Old 02-10-2012, 09:10 AM
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No problem. One more thing I should have said is that you can't tow/haul with the performance tunes. They have too much timing advance and if you put excessive load on them with those tunes it can cause detonation. If towing/hauling you either need to use the stock tune, tow tune(requires 91 I think), or use a lower octane tune with higher octane gas (like 87 tune with 91 or 93 gas). I prefer the last option, seems to get the most power and best mpg.
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  #24  
Old 02-10-2012, 10:37 AM
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Do you have to pay extra for the line pressure (firmer shifts) of the transmission? Do you have to pay extra for anything with the sc 3865? I think this is the tuner i am going to get. Thanks a lot.
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  #25  
Old 02-10-2012, 10:41 AM
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Do you have to pay extra for the line pressure (firmer shifts) of the transmission? Do you have to pay extra for anything with the sc 3865? I think this is the tuner i am going to get. Thanks a lot.
When you buy the tuner it comes with some transmission control. I believe they don't offer line pressure adjustment options anymore. You can adjust TM to stock or superchips setting, and can adjust the shift schedules to stock of superchips setting. If you want more options you can purchase advanced trans control for like ~50 give or take and can make your own shift schedules (or download and uses someone elses), I think you can manipulate TM and have total control over it, among other things. I don't have the advanced trans so I don't know exaclty, but will buy it at some point.

SC told me that one of the ways they firm up and speed up shifts isn't through TM, line pressure, etc... but through reprogramming the "shift delay" time, or in other words if the stock tune makes it take 1 second to shift, the reprogram it to take 0.5 second to shift. So this shouldn't at all affect durability.
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Old 02-11-2012, 03:03 PM
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I remember seeing an episode of "Myth Busters" where they tested if a pickups tailgate caused drag and hurt gas mileage. They found that with the tailgate up it actually helped mileage because the vortex created caused lift that resulted in less drag and improved mileage
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Old 02-11-2012, 03:13 PM
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Originally Posted by Blue Bear View Post
Im in the same spot with my truck I have the 4.7 with the CAI, flowmaster exhaust and the bed cover I can't seem to get any better the 13.5 if I'm nice to her but on average I get around 12.5 to 13.0 the programer is my next purchase to try and get into the 14's. But it's like I was told about a month ago on this site by someone I didn't buy the truck to get good MPG's...

I average 21 MPG with my beast, I run true dual straight pipes, cold air intake, and a Bully Dog Triple Dog GT Programmer. Before the programmer I was averaging 19 MPG. Your gearing and tire size may have alot to do with your low MPG's. I hope you can get it worked out.
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