Join Date: Dec 2008
Location: Tyler, TX
Thanked 407 Times in 347 Posts
The EBP valve is closed with throttle below like 20%, and engine speed less than 1400 RPM. Engine coolant needs to be below 140*F as well.
Now, different PCM programming versions have different values for these numbers, so they are a ROUGH GUIDE and nothing more.
So, no matter what, the EBP valve will NOT close while you are driving down the road, it is basically only active at low engine speed + low throttle position + coolant temp., if any one of those increases, it is OPEN.
You WILL lost economy due to denser air, stiff tires and lubes, plus #1 diesel has less energy than #2, so when the percentage of #1 increases (as it must or you gel-up), you lose some power and economy.
'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin
I vote for LIBERTY!