Does anyone have a back to back comparison for adding flex pipes to their headers? This Raceland header has been working well for 200 miles but my head gasket leaked so now I have the opportunity to upgrade the exhaust before I put the head back on. I got these Vibrant Performance pieces (2" ID x 4" OAL Vibrant Stainless Exhaust Flex Pipe w/ Interlock Liner - PN 60604)
But they are so stiff! I have to stand on it to see any flex. And let me say that the only reason I'm looking into this is because I notice a huge difference in vibration that is transferred to the car with the new exhaust on.
What do you think? Is this just a waste of time and money?