EBPV switch for Automatic

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Nov 22, 2018 | 12:38 AM

Matthew Clark

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EBPV switch for Automatic

I’ve seen a lot of people using the EBPV as an exhaust brake. The wiring looked easy as I’m good with wiring but a lot of them were manuals and saw something that I had to be careful if I was using for an auto. What are the dangers and are there anyways of still using it as a exhaust brake and playing it safe?

Nov 22, 2018 | 06:40 AM

FordTruckNoob

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From: Henderson, NV

Are you talking about having a TC Lockup when activating the EBPV as a brake? I have used mine without issue for years.

I just removed my DIY TC Lockup and EBPV mods since my chip has a decel tune. I can send those to you for free if you pay postage.

Nov 26, 2018 | 10:33 AM

GEugeneS

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From: West Coast/L.A. Area

Quote:

Originally Posted by Matthew Clark

I have heard there could be issues with the valve springs not being strong enough but never heard of anyone actually blaming engine damage on using it as an exhaust brake. I've also seen several DIY wiring schematics on this forum but opted for a decel tune on my tuner. I have used it pulling my 5er in the eastern Sierra's since '07 and not had a problem although I could conceive of one by stepping on the throttle with the EBPV closed at high RPM.

Nov 27, 2018 | 07:18 AM

Tugly

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From: Puget Sound

If you rig it so it won't engage if the IVS is open, that prevents the throttle from being an issue.

I've watched the exhaust backpressure, and I max out at 35 PSI - which I believe is right near sensor limit. 350K miles and no crashing cylinder noises yet. I'll say this though - engine braking is the ultimate valve spring test, because boost and backpressure equalize each other out and don't cause the same strain.

If you go to engine braking on an auto, really keep an eye on Torque Converter Slip, transmission temp, and exhaust backpressure.

Nov 28, 2018 | 11:30 AM

GEugeneS

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From: West Coast/L.A. Area

Quote:

Originally Posted by Tugly

You're a little advanced on this issue for me. I wouldn't know how to how to rig it so the idle switch is open, so i'll just be extra careful not to accelerate when the EBPV us closed. So far that's worked.

I also wouldn't know how to measure TC slip or exhaust backpressure, but I assume if you have a lot of TC slip, the trans fluid temp will go up and I have a gauge for that. I am however gratified that you've got 350K on it I assume using the EBPV as a brake on a regular basis up in Washington and no major problems. That mileage would more then last me the rest of my life. thanks for the info!

BTW, in late July Irode my bike (Harley) up the coast several years ago going to Sturgis and turned right at the Columbia River. Froze all the way up the coast (in the 50's and foggy) and within 50 miles it was 110 going east!

Nov 28, 2018 | 06:20 PM

hydro man 17

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From: Hat Creek Ca

I am aware that a lot of folks here don't care for DP tunes, but I have the exhaust braking feature and it works well for me. As far as I understand it there are some safety features built into the program to prevent doing anything " incredibly stupid".

Nov 28, 2018 | 06:48 PM

dmd

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From: DFW

Probably get valve body for the trans if you use it. Gets better pressure to avoid slipping and heating up the clutches because you dont have
a lot of input RPM to run the pump.