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yes they are - but worth every penny if u tow heavy (n even if u dont)
*the i.d. is not what they advertise so i dont know how concerned u r with flow but if u hav spent anywheres near as much as i have on ur ex sys then u will want to order one size over and hav pac send the correct reducers to make it work
iow if you have a 4" ex sys make sure u order the 5" prxb
the 4" brake aint 3.5" on the i.d.
The Following User Says Thank You to Mississippi For This Useful Post:
Just dont buy the stock style one from Pac brake. All the ones listed for your application replace the back of your turbo. At some point you will want to upgrade turbos and your exhaust brake will no longer work unless you run a HX35/40 hybrid. Either upgrade to an HX40 flanged turbo now or do what was mentioned earlier and buy one that mounts in the exhaust pipe. Only drawback is this style will take a little longer to generate back presure but will allow you to go with any turbo you like later on.
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