Compression Ignition Addict
Join Date: Oct 2011
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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.
2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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