I’ve been considering an Exhaust Brake for years while traveling with our big Lance 900 in our truck bed.But now that I have sold that & I’m towing a heavier Travel Trailer & on our 1st outing probably drove around 2000 miles & I’ve sold off my other toys & plan to focus on my tow rig & want to start with an exhaust brake & maybe water/meth injection after that?I was telling a co worker & he started asking about being I have mods bringing me to 500 HP.If that might be an issue?I can’t imagine why it would cause problems?But wonder if I’m wrong?& then what might be my best bet for the best help on those long steep grades?Don’t want to be over heating my brakes.I figured I’d mount the switch right under the shifter knob.I’ve heard there’s even adjustable models & some with built in safety’s like in case I forget to turn off the brake I don’t stall the truck while shifting?I’ve heard of other options that would also turn it off when I accelerate.& back when when I let off?I’ve also heard of turbos that have them built in to it?& would those work as well with out lowering my HP?I also would mention , I have a 4” straight pipe from the turbo.

Generally the exhaust brake wiring would tie into the clutch pedal safety switch, similar to cruise control and that it would disconnect when you pressed on the clutch. Of course being you are adding the exhaust break after market you might need to be creative with the wiring to do such.

All I could afford wrote:Generally the exhaust brake wiring would tie into the clutch pedal safety switch, similar to cruise control and that it would disconnect when you pressed on the clutch. Of course being you are adding the exhaust break after market you might need to be creative with the wiring to do such.Interesting, thanks.

I may be wrong but I've never heard of an EB disconnecting when pushing the clutch. Mine is controlled by the trucks ECM and does not disengage with clutch pedal action - and I'm not sure why it would. There's no reason to have it disengage while your shifting either up or down. Normally for models earlier than the Common Rails, a switch is attached to the throttle pedal so anytime you have your foot on it, it disengages or engages anytime you take your foot off. Engine mods have no relation to the EB so your safe there. You do need to have the appropriate valve springs and I don't know if your truck came with them or not. (I think so). The switch under the shift lever works great and is where I put mine. It's very convenient and causes a lot of questions!I think you'll find you wish you would have put one on sooner and I can't imagine being without it!(BTW, it's a "Cummins")

I would contact EB dealers/mfg with those questions. They can give you answers on current their EB for the 5.9 Cummins. Some of the diesel speed shops carries them and can be helpful for tech questions on your modded 5.9 Cummins. My '03 Dodge Cummins/NV5600 came with the Jacobs through Dodge Businesslink dealers which gave me a Dodge warranty (long gone now). The EB switch is under the shifter knob. It works in all forward gears (even reverse). It stays on with the clutch in or out....has a hi idle/EB on for fast warm ups. The Jacobs is vacuum operated so it has a vac inline mechanical pump with a long long belt. I've had no problems with mine for over 300k miles. Vacuum vs air pressure. Most brands are are operated with a remote air pump which are handy for airing up other things.

Contact PacBrake. Go with the 4" outlet model. The standard 3" is too restrictive.

Exhaust Brake on a 12 valve Hot Rod Cummings, manual trans?

ScottG
Nomad
May 24, 2018
I may be wrong but I've never heard of an EB disconnecting when pushing the clutch. Mine is controlled by the trucks ECM and does not disengage with clutch pedal action - and I'm not sure why it would. There's no reason to have it disengage while your shifting either up or down.
Normally for models earlier than the Common Rails, a switch is attached to the throttle pedal so anytime you have your foot on it, it disengages or engages anytime you take your foot off.
Engine mods have no relation to the EB so your safe there. You do need to have the appropriate valve springs and I don't know if your truck came with them or not. (I think so). The switch under the shift lever works great and is where I put mine. It's very convenient and causes a lot of questions!
I think you'll find you wish you would have put one on sooner and
I can't imagine being without it!

(BTW, it's a "Cummins")
Blanco1
Explorer
May 24, 2018
All I could afford wrote:
Generally the exhaust brake wiring would tie into the clutch pedal safety switch, similar to cruise control and that it would disconnect when you pressed on the clutch. Of course being you are adding the exhaust break after market you might need to be creative with the wiring to do such.

Interesting, thanks.
All_I_could_aff
Explorer
May 24, 2018
Generally the exhaust brake wiring would tie into the clutch pedal safety switch, similar to cruise control and that it would disconnect when you pressed on the clutch. Of course being you are adding the exhaust break after market you might need to be creative with the wiring to do such.

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Exhaust Brake on a 12 valve Hot Rod Cummings, manual trans?

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