Sonnax Line Pressure Booster - Hemi Truck Club
 
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Old 09-09-2010, 03:02 PM   #1
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I've had the Sonnax plug and play line pressure booster on my 04 QC for over a month, and from the driver's seat I give it a x2 inexpensive mod!
Noticeably firmer shifts at WOT, and after a few miles of city and interstate driving, I've noticed firmer shifting at part throttle. No codes and all the tranny lines are dry, so no issues with the increased pressure.
My mods are a CAI and exhaust with SC3815/87 performance tune, and I won't be damned if I got a second gear scratch out of that old heavy girl on a spirited drive down the on ramp. It was her first .
It will be an interesting drive when I get around to getting a SC3865 and can program the shifting.

http://www.sonnax.com/announcements/44957-LB1_LB2.pdf

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Old 09-10-2010, 06:00 PM   #2
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Old 09-14-2010, 05:13 AM   #3
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Please keep us posted if you have any problems that could be related with the line pressure booster. I plan on doing that mod too. Thanks CavRam.
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Old 11-10-2010, 09:00 PM   #4
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Still have the Sonnax line pressure booster hooked up in-line with the Trans electronic controls and I have had no negative issues. Just completed a move from northern WA to southern CA traveling through mountain passes with a fully loaded bed and towing my wife's car on an auto hauler. Shifts were firm and flawless with no overheating or trans codes. Still a definite recommendation as an inexpensive mod.
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Old 11-11-2010, 04:52 AM   #5
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Where can I get one?
What's the cost?
Where does it install?
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03 Ram 1500, QC, Sport, 5.7L
Performance Mods:
3rd Strike CAI & AEM Dry Flow, AirRam Jet Stream & Power Wire
FlowMaster Super 44 Exhaust (Out The Side), 3.92 Gears, Taylor Spiro Pro Shorty Wires
Exterior Mods:
2 Hella 500FF Behind the Grill, 8 Halogen Rock Lights
275/60/20 Cooper Zeon LTZ's
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Old 11-11-2010, 05:01 AM   #6
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Did you buy the 10-15psi or the 15-30psi?
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03 Ram 1500, QC, Sport, 5.7L
Performance Mods:
3rd Strike CAI & AEM Dry Flow, AirRam Jet Stream & Power Wire
FlowMaster Super 44 Exhaust (Out The Side), 3.92 Gears, Taylor Spiro Pro Shorty Wires
Exterior Mods:
2 Hella 500FF Behind the Grill, 8 Halogen Rock Lights
275/60/20 Cooper Zeon LTZ's
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Old 11-11-2010, 05:32 AM   #7
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I installed one a few weeks ago. My trans was slipping and chattering in third gear bad under boost at WOT. The Sonnex line pressure booster has helped allot. It still slips in third gear but, only half as bad. It chatters only a little now. The trans also feels like it has a better pull, 1st to 2nd to 3rd gears.
Yes, I will be changing the trans. But, it make me think. Could this line pressure booster have saved my trans in the first place.... Hummmmm....... The Sonnex line pressure booster is money well spent. Let's face the facts. Our transmissions aren't as strong as they should be. Some thing to think about.
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Old 11-11-2010, 05:38 AM   #8
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Quote:
Originally posted by Ghost03hemi:
I installed one a few weeks ago. My trans was slipping and chattering in third gear bad under boost at WOT. The Sonnex line pressure booster has helped allot. It still slips in third gear but, only half as bad. It chatters only a little now. The trans also feels like it has a better pull, 1st to 2nd to 3rd gears.
Yes, I will be changing the trans. But, it make me think. Could this line pressure booster have saved my trans in the first place.... Hummmmm....... The Sonnex line pressure booster is money well spent. Let's face the facts. Our transmissions aren't as strong as they should be. Some thing to think about.
What PSI booster did you use?
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03 Ram 1500, QC, Sport, 5.7L
Performance Mods:
3rd Strike CAI & AEM Dry Flow, AirRam Jet Stream & Power Wire
FlowMaster Super 44 Exhaust (Out The Side), 3.92 Gears, Taylor Spiro Pro Shorty Wires
Exterior Mods:
2 Hella 500FF Behind the Grill, 8 Halogen Rock Lights
275/60/20 Cooper Zeon LTZ's
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Old 11-11-2010, 05:45 AM   #9
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and the price is?
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Old 11-11-2010, 09:08 AM   #10
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I payed $40 for mine and took a couple minute's to install.Work's great.
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