What is the difference of shutting off the egr with a programmer or usuing a blocker plate or both together?? I'd like to do this right.

My understanding is the programmer disables the EGR diagnostic, which triggers the codes should you unplug or block the EGR. Its up to you to disable the actual EGR flow by unplugging it or by blocking it with a plate.

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Thanks that makes sense.

With a plate you know it is closed.

Also with a plate there is a small amount of heat load taken off the coolant system.

Also with a plate there is a small amount of heat load taken off the coolant system.

Thats true, but its a very small amount and up north you may want to leave the EGR alone for improved heater performance.

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Thats true, but its a very small amount and up north you may want to leave the EGR alone for improved heater performance.

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If its that small of an amount the heater won't be noticeably better. I say block it.

If its that small of an amount the heater won't be noticeably better. I say block it.

The amount of flow and the amount of heat is small compared to the ENTIRE COOLING SYSTEM but to just THE HEATER CORE LOOP it is large.

Just letting people know they will have reduced heater performance as a side effect.

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I have unplugged mine(thanks TX) and honestly it will still roast you out. It was 15 this morning, and still seems about the same as it was before I unplugged the egr. I have no Data to back this up, just an observation.

I have 2 of my trucks blocked and my heaters work great in -6 degree weather. I also don't have to worry about the EGR not seating properly. Even if it's leaking theres nothing there. Your turn TX!

I want to block mine but dont want to have to worry about codes.

I want to block mine but dont want to have to worry about codes.
Fingerstick or Predator 2.02.

My Hypertech can clear codes. I just dont want to have problems.

Fingerstick and Predator 2.02 both "disable" the code throwing. You will not even get the codes to start with.

Hmmm.

Excactly.):h There is a for sale section here.

I have 2 of my trucks blocked and my heaters work great in -6 degree weather. I also don't have to worry about the EGR not seating properly. Even if it's leaking theres nothing there. Your turn TX!

Its not the peak heater performance that suffers, its the time it takes for it to get heat going while warming up. Once the truck is warmed up you won't notice the difference in the heater output.

Once the truck is warmed up the EGR only adds 1 degree to the entire system, which might be impactful on the heater core which is dissipating it but not the rest of the system.

Your turn now RDL, post your time to temp heater vent output tables :D

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There is no real heater benefit(in theory anyway) . EGR is totally disabled until the ECT is over 135. No egr flow, no (appreciable) heat exchange in the jacket.

That assumes that the egr is airtight when closed.:o: Who knows?

Wow. What a debate.
When I start my truck up cold I can tell you for a fact that it takes a long time to get my EGT temp high enough to amount to a hill of beans!!! No temp there, no temp in coolant from there. Once I apply load to the motor the EGT rises drastically, but by then the stats have done their job & I have good heat. Next.:):):)

By the way, I can get out and wiz on the motor and help heat it up too!):h ):h ):h

When I start my truck up cold I can tell you for a fact that it takes a long time to get my EGT temp high enough to amount to a hill of beans!!!

do you mean ECT? If so, same here. It takes a long time to raise 1000 lbs of metal by 200 degrees.

Even with the EGR port itself closed, the cooler canister is still exposed to exhaust gasses which are well above engine temps. Pull your blocker plate and check the nice scorch marks, there is heat at that hole. Then at the few times it is actually open there will be flow through it.

The exhaust temp is hot faster than the engine temp ever thought of being.

Anyway, its not critical, just something felt people in the far north should know.

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So, it actually takes alot longer to warm it up when its cold out?

The benefit of this is what?

Better throttle response? Less soot recirculated through the intake?

So, it actually takes alot longer to warm it up when its cold out?

The benefit of this is what?

Better throttle response? Less soot recirculated through the intake?

The amount contributed to actual engine warmup is very small.

What I am saying is the HEATER may not get up to speed as fast. The heater will work just as well once the engine is warmed up to 185-192*, but until then the heater will be slightly less effective.

I doubt most will even notice, as RDL pointed out today most people up north utilize remote start or they start and leave the truck and let the truck warm up a bit before jumping in it.

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Ok, that answers my questions. My truck sits and warms up everyday anyways before I jump in it.

Thanks for the response.

Nick