SCT and DD - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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  #1  
Old 01-06-2010, 09:10 PM
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SCT and DD

I have an 08 with 6" lift and 37's. I have the SCT, magnaflow and dpf delete, and a stock airbox. I am not looking to race the truck so i was gonna leave it on the performance setting. I put the transmission setting on soft. I should be okay leaving the truck this way all the time correct? Or just leave it on tow? Sorry for the dumb questions, just wanna stay away from problems.
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  #2  
Old 01-06-2010, 09:12 PM
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I would think you should be fine. Make sure that you have the tire size adjusted for your tires. 37's and tuners can be destructive to a tranny over time.
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Old 01-07-2010, 02:02 AM
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Do not leave it on "soft" setting! That is basically a stock trans setting which sucks for any performance tune! Not safe for your trans. Better to have it "firm" and safer in the long run! Just my two cents!
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Old 01-07-2010, 05:29 AM
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Cool SCT Performance Tune

Believe it or not, I've been running the River City Diesel 485 Tune since I bought it in August and averaging 15mpg combined. About 2 weeks ago, I dropped down to the SCT Performance Tune because of the winter slop up here in New England and to see if I could get a little better mileage. Right away, I missed the additional power so much that I started driving it normal (easy). I drove it for 3 full tanks of fuel and my mileage did not change at all. When I filled up yesterday, I re-loaded the 485 tune - damned the torpedoes!
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Old 01-07-2010, 05:44 AM
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[QUOTE=jimd1050;1625902]Believe it or not, I've been running the River City Diesel 485 Tune since I bought it in August and averaging 15mpg combined. About 2 weeks ago, I dropped down to the SCT Performance Tune because of the winter slop up here in New England and to see if I could get a little better mileage. Right away, I missed the additional power so much that I started driving it normal (easy). I drove it for 3 full tanks of fuel and my mileage did not change at all. When I filled up yesterday, I re-loaded the 485 tune - damned the torpedoes![/QUt

Trans setting?
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Old 01-07-2010, 06:32 AM
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[QUOTE=msdt-99517;1625993]
Quote:
Originally Posted by jimd1050 View Post
Believe it or not, I've been running the River City Diesel 485 Tune since I bought it in August and averaging 15mpg combined. About 2 weeks ago, I dropped down to the SCT Performance Tune because of the winter slop up here in New England and to see if I could get a little better mileage. Right away, I missed the additional power so much that I started driving it normal (easy). I drove it for 3 full tanks of fuel and my mileage did not change at all. When I filled up yesterday, I re-loaded the 485 tune - damned the torpedoes![/QUt

Trans setting?
Mileage may have improved but remember that winter fuel is also cut with kero (usually 20-50%) and MPG will drop because of that also. Winter here in the Northeast also brings longer idle times and warm again hurting fuel mileage.
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Old 01-07-2010, 12:44 PM
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Cool

[QUOTE=msdt-99517;1625993]
Quote:
Originally Posted by jimd1050 View Post
Believe it or not, I've been running the River City Diesel 485 Tune since I bought it in August and averaging 15mpg combined. About 2 weeks ago, I dropped down to the SCT Performance Tune because of the winter slop up here in New England and to see if I could get a little better mileage. Right away, I missed the additional power so much that I started driving it normal (easy). I drove it for 3 full tanks of fuel and my mileage did not change at all. When I filled up yesterday, I re-loaded the 485 tune - damned the torpedoes!
Quote:
Trans setting?
Basically "Stiff" - with the custom tunes, RCD sets up the transmission - I have the option to make individual changes for WOT shift points and shift pressure for each gear but that's it. It's stiff but NICE stiff, not harsh!
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Old 01-07-2010, 12:49 PM
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Cool Winter mileage

[QUOTE=powerstroker67;1626059]
Quote:
Originally Posted by msdt-99517 View Post

Mileage may have improved but remember that winter fuel is also cut with kero (usually 20-50%) and MPG will drop because of that also. Winter here in the Northeast also brings longer idle times and warm again hurting fuel mileage.
Hey Neighbor! I think I'm still doing an apples to apples comparison because the 485 mileage spec was based on 2 weeks ago and it was already cold up here. I just thought I'd give the 485 a rest and try the "Canned Tune" - it only took a day to regret going backwards. This morning driving to work on the 485 again, I think I smiled all the way to work!
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