[randycooper]

I have a 2000 7.3 with auto tranny and was thinkin about about exhaust break because I tow a lot. Anyone think this is a good idea? Or is the exhaust brake with auto tranny bad?

 

[Im_Strokin_ur_Cummins]

If you dont already have gauges get those so you know what your trans is doing. Putting a Valve Body on would help temps and tranny life for a lot cheaper then the exhaust brake. Unless your towing on a lot of hills frequently I personaly dont see the need to spend that much on one. But that is my opinion, nothing agianst them just why spend the money if you dont have to.

 

[Turbostang500]

Do a lot of searching. There should be quite a lot on the subject.

 

[randycooper]

Ok I will look into that and yes i have gauges with tranny temp. What exactly duz the valve body do?

 

[Turbostang500]

I would probably just ignore that post. It seemed to have meaningless info that didnt have anything to do with what your asking.

Engine brakes will work ok with an auto trans. You will have to get the torque converter clutch locking up so the engine is actually engaged.
Oh just for clarity, i dont know of an actual engine brake for out trucks. Only an exhaust brake. Wasnt completely sure if that is what you are wanting.

 

[randycooper]

I'm lookin for an exhaust brake.

 

[Turbostang500]

Sorry man. I have no idea why I thought your first post had "engine brake " in it.
Probably cause I am studying up for a CDL.

So, are you looking aftermarket or converting the ebpv?

There should be plenty on using the ebpv but maybe a lot less on an aftermarket one.

 

[randycooper]

It's no problem man what is the ebpv? And what duz it do? I'm sorry Im new to diesels lol I'm mostly wonderin if the exhaust brake down shifts my tranny like the new pickups do or if it uses backpressure in any gear and does not downshift cuz thats what im looking for lol

 

[Turbostang500]

Ebpv is exhaust back pressure valve. International went to it for a faster cold weather warmup. This is what makes the LOUD hissing sound from the exhaust when the truck is cold. There are a bunch of threads on rewiring it to function as an exhaust brake.

I wired mine so that I can use as a brake when coasting (let off throttle) and not appling the brakes. My pcm and I think many others, locks the tcc above 40 mph and will keep it locked on decel to take advantage of engine braking. When I energize the ebpv to brake, it works fairly decent for having exhaust leaks.
the other 2 ways mine is wired (on a 3 position double pole switch) is "off" in the off position because I get tired of hearing it! Lol. Last, I have the 3rd position (down) wired to work exactly as ford intended it to.

As far as aftermarket, I have zero experience. I doubt they downshift the trans. It probably locks the tcc but like I said, mine on factory programming, locks the tcc down to 40 mph and if I pull it down to 2nd gear, it will lock back up.

3rd option is a tuner. DP tuner has said that they have a program for doing this but I have no exper with it either.

 

[1BADTON]

Got my 01 with a bakes brake on it and love it. Once i switch it on the truck and what ever i'm towing will slow to 25mph and then shut off to use the service brakes only. Yes I have to downshift manually to get slower faster but on a long down hill grade it will hold 65 with my 27' 5th wheel fully loaded.

 

[CT Performance Inc.]

The best IMO is the BD brake, I used one for years and have customers that tow heavy that love them..if I can help let me know.

 

[eremite06]

The best IMO is the BD brake, I used one for years and have customers that tow heavy that love them..if I can help let me know.

Also have the BD brake. Towed my 39' 5th whl all over the northeast in some steep mountains. Works great.

 

[Im_Strokin_ur_Cummins]

Go to XDP.com(extreme diesel performance) they have a exhaust brake kit and if you have questions about it they have techs online you can talk to if you need more assistance.

 

[potbss]

Don't mean to hijack your thread. I've been wanting to add an exhaust brake for awhile now. Especially after towing through the mountains of west Virginia this year. The only thing that is stopping me from getting one is what brand to go with and turbo mount or inline. All companies have the tc lockup controller for the automatics.

 

[CT Performance Inc.]

I sell both the Banks and the BD...IMO hands down the BD.
If you don't have the stock style turbo and can't use the turbo mounted one then the remote is for you.

 

[[email protected]]

3rd option is a tuner. DP tuner has said that they have a program for doing this but I have no exper with it either.

This is correct, we offer a 'Decel' tune for our F5 and F6 chips that can be used as an exhaust brake function. Since we can control the EBPV with the programming, this tune allows you to open and close the valve on command, making it a very inexpensive exhaust brake option. We are also making some changes in the auto transmission calibrations to make this more effective. Like any exhaust brake, the more engine RPM you turn while braking (downshift), the more effective the Decel/EBPV brake will be.

 

[Turbostang500]

This is correct, we offer a 'Decel' tune for our F5 and F6 chips that can be used as an exhaust brake function. Since we can control the EBPV with the programming, this tune allows you to open and close the valve on command, making it a very inexpensive exhaust brake option. We are also making some changes in the auto transmission calibrations to make this more effective. Like any exhaust brake, the more engine RPM you turn while braking (downshift), the more effective the Decel/EBPV brake will be.

Can you go into detail about when the ebpv is applied or what it looks for to apply?
Example, does the brake apply or release when the service brakes are used?
Does it only apply when the accel pedal is in the idle position?

Also, have any long term affects been studied or discussed in regard to downshifting the auto trans when pulling a loaded trailer?

Not wanting to flame you so dont take it that way! I have been wondering a few of these since I had heard of your programming.
Thanks!

 

[[email protected]]

The way it works with our chip is that the 'Decel' is a tune of its own. So you can tow/accelerate in the standard towing tune on the chip. Then when it comes time to decelerate down a grade or freeway off-ramp, you can just reach over to the chip switch, change it to the Decel tune and the valve will close. When you are ready to accelerate again, just switch the chip back to your tow tune, the valve opens back up and off you go...

Have a lot of customers running this as an exhaust brake function and have yet to hear of an ill report. My dad runs it in his 2002 truck and has done so for over 60,000 miles without issue. He loves it while towing his 38' fifth wheel in the mountains of Utah.

 

[Turbostang500]

Hear is an idea, when I wired my 3 way switch up to get braking from the ebpv, I used a micro switch on the accel pedal to supply power only when at an idle. Then, I ran through a normally closed relay that is controlled with the brake light switch. No brake lights, relay is closed and ebpv closes. Depress the brake pedal and when the brake lights come on, the ebpv opens.

I would think with the ability of tuning these trucks, you guys could watch these inputs in the pcm and use them in the same fashion. So, if you do this, maybe it could be a piggy back program with a tow tune. Call it tow w/ decel or something. Then the driver can flip it to this position and leave it there. When the time comes for the exhaust brake, it will be ready to function? Just ideas, sorry if I am cluttering up the thread.

On the other question, I was refering to the "downshifting" of the trans when slowing down a load.