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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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  #81  
Old 01-03-2012, 09:30 PM
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Uh oh so it this a waste???
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  #82  
Old 01-03-2012, 09:55 PM
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Quote:
Originally Posted by snrusnak View Post
Just an FYI to all looking into this, the transengineer on the forum mentioned that the pcm would most likely automatically "correct" line pressures to the factory settings after some time...
Nope.....won't happen! The PCM doesn't know the pressure is different, as this unit is sending the PCM altered pressure information. If the PCM was able to react to this and alter the pressure down to where it was, then it would do the same without it, and that would cause the trans to burn up prematurely under normal driving conditions.

Quote:
Originally Posted by BlackHemI View Post
Uh oh so it this a waste???
The opposite! Probably the best mod you can do for your truck at any price. The increase line pressure is not at all damaging, but rather to opposite. Hard shifts don't hurt transmissions, soft shifts do, as soft shifts cause heat and wear, which are pretty much the only things that kill a trans.

Why are factory shifts so soft then you ask????
The factory is too busy trying to make the trucks drive like a car, and nice soft virtually unnoticeable shifts is just one of those 'car' things that they did. Unfortunately, some of these 'car' things have a dark side, and those of use that drive hard and/or pull trailers are seeing lower transmission life then we should.

Do NOT hesitate. Spend the $50 and have the piece of mind knowing you just increased the life of your trans, and can finally 'feel' the shifts.
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  #83  
Old 01-03-2012, 09:58 PM
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Quote:
Nope.....won't happen! The PCM doesn't know the pressure is different, as this unit is sending the PCM altered pressure information. If the PCM was able to react to this and alter the pressure down to where it was, then it would do the same without it, and that would cause the trans to burn up prematurely under normal driving conditions.
I'd like to hear TE's input on this.
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  #84  
Old 01-03-2012, 10:19 PM
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Quote:
Originally Posted by snrusnak View Post
I'd like to hear TE's input on this.
You and me both! The last thing I want is a PCM that's programmed to destroy my trans!

BTW - I've got over 5K miles since the Sonnax, and my PCM still hasn't altered the shifts from when I first installed it. I sure hope this does NOT change, but it was going to, I'd have expected the change by now.

BTW - I do know the PCM is adaptive, as when I drive hard and manual shift, the trans pressure does increase, and shifts get even firmer. But they did that before anyway, as without the Sonnax, I was able to improve the shifting simply through aggressive driving to level the Sonnax gives at normal driving. Now when it improves, the shifts are very firm....not enough to chirp the tires, but enough to break them loose on slippery roads, something it WILL NOT do without the Sonnax.
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Mods - 3M clear protect, Decals removed, Electric Tailgate Lock, Tow Hooks, Skid Plates, Bed Rug, Pace Edwards Bedlocker Electric Tonneau, Timbren Rear SES, Tinted Tail Lights, Debadged, Grill Blacked Out, Shorty Antenna, Black Chromed Emblems, Lightly tinted front windows, DS Predator, Cabin Air Filter, K&N Drop In, Mufflex (Magnaflo) DOD24M, Sonnax line pressure booster, Volant CAI
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  #85  
Old 01-03-2012, 11:23 PM
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I think this.is my next.mod.then because I drive mind hard
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  #86  
Old 01-04-2012, 05:40 AM
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Just ordered mine from trans parts USA can't wait to put it on
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  #87  
Old 01-04-2012, 07:26 AM
09nitetrain 09nitetrain is offline
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ordered mine last night along with a cold air intake and diablo sport tuner. next in the spring will be lift and exhaust
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  #88  
Old 01-04-2012, 08:56 AM
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It's so cheap and simple! Mine has been serving me well! I had a good 1-2 upshift this morning passing an 18-wheeler. Chirped @ 60!
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  #89  
Old 01-04-2012, 09:41 AM
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Holy crap and I thought my first gear was loooooong, LOL! I forgot you had 3.21.
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  #90  
Old 01-04-2012, 10:09 AM
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Got one in mine and i dont notice any difference at all
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