I’m installing a pac brake exhaust brake on my 05 ram 3500 with a 48re auto. I have a few questions abt it. Do yall recommend the ecm bypass? It sounds like something i would want but on the other hand i want the warm up feature. Are 60# valve springs a must, if so just exhaust springs or intakes as well? What is the best brand of exhaust springs?



Thanks anyone for their input!

 

What gave you the idea that you need to change valve springs with the installation of an exhaust brake?
I have had the Pacbrake exhaust brake installed on my truck for many years and tens of thousands of miles with zero problems. Use the exhaust brake many times every day.
Can't advise on the bypass as I have never done it.

 

I read something online about having to have valve springs when installing exhaust brake, but i’ve also heard third gen cummins and up are exhaust brake ready. So i wanted to hear everyone else’s opinions.

 

For your setup:

ECM Bypass: The ECM bypass can help the exhaust brake work independently of the computer, giving you better control. But if you want to keep the warm-up feature, you might not want to bypass the ECM. It’s about what’s more important to you.

60# Valve Springs: These are recommended because the added backpressure from the exhaust brake can cause valve float with stock springs. It’s best to replace both intake and exhaust springs for better balance and durability.

Best Brand: Pacbrake and Hamilton are popular brands for valve springs. Either should work well for your setup.

Make sure to check compatibility with your engine and consider what’s best for your driving needs.

 

ECM bypass is a recommended option in some cases because it allows certain engine functions, including exhaust system and valve management, to be bypassed when using the exhaust brake.