Quote:
Originally Posted by LandShark-47
What about blowing up the egr or turbo. Maybe even cooking the converter?
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I'll take these one at a time:
EGR: The EGR valve is only active when throttle is being applied. As the system will activate only when throttle is
not being applied the EGR will remain closed. We're not generating enough back pressure to push it off it's seat or float the valves so there's no chance of damage here.
Turbo: When the brake activates it, initally, closes the vanes down to a start position. After that is varies the vane position depending on the amount of braking force needed to set and hold the down hill speed you told it to (you can set it anywhere between 25mph-75mph). While closing the vane position down does speed the turbo up it will get nowhere near it's maximum speed. Basicly it will be turning faster then it would at a dead idle but much slower then it would under hard acceleration. This actually helps the truck out in a few ways. For starters the boost pressure will come UP when the brake is turned on but no throttle is being applied. This will cause your EGT's to drop like a rock. Second, because the turbo is already spinning faster then at idle, when you get back on the gas again boost is already present. This makes the truck much more responsive. (and it comes in really handy if you need to jump on the gas while towing a trailer)
Torque converter: When the brake activates it will lock the torque converter and it will stay locked until the brake either shuts off or reaches it's target speed (it will coast at this point but will re-activate if the truck goes faster than the target speed). We're generating about 200hp worth of braking force which is far less than what the trans or torque converter will tollerate. Just to be safe however, the system will also monitor transmission slip and transmission temp. If either the temp or the slip rate exceed the factory limit the brake will shut off.
