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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #151  
Old 06-01-2012, 04:17 PM
rt9602 rt9602 is offline
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Quote:
Originally Posted by BlackRamHemi View Post
....
BTW, the Sonnax is not required if you want to get a custom Diablo tune done
....
So, the "canned" TCM tune from the DiabloSport will not affect line pressures to any noticable amount?

I've been running the TCM Performance tune with the Sonnax. I was going to remove the Sonnax - let a friend try it on his but figured I'd best de-tune off the DS, drive it a bit then remove it so as to not totally confuse the trans... thoughts?
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  #152  
Old 06-01-2012, 04:21 PM
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After removing the sonnax you need to do the relearn procedure for the transmission. Otherwise your line pressures will be way low.
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  #153  
Old 06-01-2012, 04:43 PM
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To mess with line pressures with a DiabloSport, you need a CMR tune. It's not in the canned tunes.

The first few shifts with the Sonnax will hit hard, but the computer smooths them out...then if you take it off, the will be way soft and slip.
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  #154  
Old 06-10-2012, 08:16 AM
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So should I just take out my sonnax and put it beside my throttlebody spacer in my random nonsense drawer in my tool box? Or just leave it in since its not hurting anything really?
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  #155  
Old 06-10-2012, 07:26 PM
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Up to you but I'd personally take it out. Some people report that they have other issues with them. You will want to do the relearn procedure though when you remove it.
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  #156  
Old 06-10-2012, 07:43 PM
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Quote:
Originally Posted by snrusnak View Post
Up to you but I'd personally take it out. Some people report that they have other issues with them. You will want to do the relearn procedure though when you remove it.
Agreed, the computer negates that line booster after a while.
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  #157  
Old 06-10-2012, 11:08 PM
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Quote:
Originally Posted by InDeepWaterBlue View Post
Agreed, the computer negates that line booster after a while.
Unless you have a pre-2011 and are using a tuner. Then the sonnax makes a notable difference.
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  #158  
Old 06-10-2012, 11:14 PM
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Quote:
Originally Posted by brad12kx View Post
Unless you have a pre-2011 and are using a tuner. Then the sonnax makes a notable difference.
Good catch Brad just realized he had a 2010 Ram, so you could definitely get a tuner if you wanted to keep the Line Pressure Booster.
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  #159  
Old 06-11-2012, 08:05 AM
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How is that....?
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  #160  
Old 06-11-2012, 02:43 PM
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With my DS tune, the Sonnax is both noticeable and the shifts don't seem to 'adapt' as they do without it. Even if I granny drive for awhile, they stay firm. Without the tune the PCM appears to adapt to the Sonnax and reduces the pressure.

I am hoping to hook up an actual pressure gauge to monitor what is going on, but for now I'm very pleased with the combination of DS tune and Sonnax. The shifts are firm enough to chirp the tires on both the 1-2 and 2-3 shifts on hot pavement under WOT. Without the Sonnax, that never happens.
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