As we covered in the article “Debunking the Shim Kit Theory,” the fix to light or twitchy steering is not adjusting the pressure of the power steering pump, but rather adjusting the flow. Another myth surrounding the power steering pump pressure is cutting the flow control spring. Just like the shim kit theory, this is also false.
Flow control springs are placed in the pump for a reason. They are necessary to achieve a constant flow rate. A constant flow rate is essential for proper steering feel. Removing coils from the flow control spring will put the pump into flow control prematurely causing adverse effects on the pump operation. It will not effect steering feel at all!
Most people are removing coils from the flow control spring in an attempt to increase their steering feel. As outlined in our “Pressure vs. Flow” article, it is adjustments to the flow that improve your steering feel.
To properly adjust steering feel, you need to adjust the flow. The best way to do this is to install a properly adjusted flow restrictor from Turn One. This will make the power steering pump compatible with your steering rack or box. Installing a flow restrictor from Turn One will improve your steering feel and not adversely effect the life of your pump.