July 30, 2019

How to Raise Chrysler RFE Transmission Line Pressure — No Tuning Required

Presented by Sonnax

Sonnax Line Pressure Booster Kit RFE-LB1No transmission removal or tuning is required to improve the performance and durability of Chrysler RFE units when you install Sonnax line pressure booster kit RFE-LB1. It's an affordable, reliable upgrade for any vehicle at any power level, delivering crisp, clean shifts without low-speed harshness.

Watch this video to learn how the booster kit works, see it installed and better understand how line pressure is controlled in the RFE transmission. Click here to see all Sonnax line pressure booster kits.​​​​​​​

Note: This kit is not recommended for use with transmission tuning mods. If you are unsure of the vehicle’s programming, use a scan tool to verify transmission line pressure meets stock levels (Drive at idle = 60 psi, Drive under heavy load = 160 psi). If desired line pressure values are greater than this, the system most likely has aftermarket tuning mods to the transmission pressure.

Related Units

Related Parts

While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time.