ACERT delete

[backagain]

What's your experience with deleting the ACERT system? I was told it is a computer reflash and backing off the tension of the ACERT solenoids in the valve cover. Did your Cat run cooler? I have a 2004 C13 at 525hp.

[Captjake1]

I know a guy that deleted mine, although on a C9. It was merely programming and boring a hole through the DPF, then blocking off the EGR.. Took about 4 hours.
It didn't run any different at all. I hope to avoid camping in Cats parking lot now.

[Captjake1]

Originally Posted by Captjake1

I know a guy that deleted mine, although on a C9. It was merely programming and boring a hole through the DPF, then blocking off the EGR.. Took about 4 hours.
It didn't run any different at all. I hope to avoid camping in Cats parking lot now.

Actually, I think we are talking 2 separate items. I simply had the DPF and ARD system deleted.

[CountryB]

Why would you want to? The early model ACERT (pre 2007) is the least intrusive "emissions" technology. We both have the same engines (the 525hp C13 without DPF and ARD). It doesn't get any better than this.

You should not be running hot or expect any noticeable changes if you were to remove it. If you are running hot now, I think you have something else going on.

But I don't see how you can, the ECU controls fuel injection based on sensors like air temp, boost, coolant temp, etc. all of that is part of the ECU/ACERT programming.

[slemnah]

Country B, I agree with you. The C13 doesn’t have an EGR valve and the ACERT system in built in integral to the motor. Just make sure the radiator is clean, Tstats are working and full of the correct coolant and you shouldn’t have any issues with it

[chucksdp]

If running hot is the issue I would double check to make sure the fan is installed properly. Make sure a pusher is pushing.

[backagain]

Originally Posted by CountryB

Why would you want to? The early model ACERT (pre 2007) is the least intrusive "emissions" technology. We both have the same engines (the 525hp C13 without DPF and ARD). It doesn't get any better than this.

You should not be running hot or expect any noticeable changes if you were to remove it. If you are running hot now, I think you have something else going on.

But I don't see how you can, the ECU controls fuel injection based on sensors like air temp, boost, coolant temp, etc. all of that is part of the ECU/ACERT programming.

It may be the least intrusive emissions tech, but any emissions tech is intrusive to an efficient engine. Any engine should improve when you stop blowing hot, oxygen depleted exhaust down its throat. Besides, I was just asking. If it's a PITA, I'll scrap the idea.

I have in-laws who are Canadian farmers. They regularly delete emissions on their trucks, tractors, combines, personal vehicles, etc. They always get positive results with better fuel economy and more power. I'll admit that their best results comes from a DPF, etc delete. Also, they always reprogram the ECU. So you would not be able to do it without the ECU flash. They're considering an ACERT delete on a truck with an 2005 C15. The procedure is as described in my OP. It may be different for a C13.

My temps have always been between 190 and 200 (maybe up to 210 with a long hill on a hot day), but if an ACERT delete lowers temps by a few degrees or gives me 1/2 more mpg, I would consider that a success. I would also consider removing the catalytic muffler. The ACERT and catalytic muffler delete should produce a noticeable improvement, even if slight.

I appreciate your opinions, even if they differ.

[CountryB]

I understand where you're coming from ---
I have 4x4 with deleted computer, deleted egr, deleted computer-control carb, deleted secondary air-injection, etc. Runs great (I can get away with this as I have no vehicle inspection in FL to worry about).

On these pre-2007 CAT engines its not worth the effort. You won't notice a change.

BTW - these pre-2007 engines don't have the catalytic muffler (a.k.a Diesel Particulate Filter, DPF). And CAT didn't go to the EGR prior to 2007 like all the other heavy diesel engine manufacturers where doing at the time.

https://www.dieselnet.com/news/2005/03cat.php

[backagain]

Originally Posted by CountryB

BTW - these pre-2007 engines don't have the catalytic muffler (a.k.a Diesel Particulate Filter, DPF).

You're correct about my 04 C13 not having a DPF, but the muffler they used is also a catalytic converter. It also doesn't have any O2 sensors before and after it, weird. This is according to an authorized Cat shop.

[CountryB]

Here's a picture of a DPF muffler.

If you have not seen the Adept Ape series on CAT engines, this is great place to start.

https://www.youtube.com/watch?v=wEG9TFXRGJY&t=1258s

[wclogger1]

Interesting about the catalytic muffler, my 2005 C7 has one that is stamped Caterpillar Catalytic. I have tried researching what it is and have no info yet. It looks just like an ordinary muffler. There are no sensors or connections other than the 5” inlet and outlet. If I were to replace it I would just buy a regular truck muffler and give it a whirl.
Bob

[gatorcq]

I would love to meet the guy that said he could reprogrammed the ECU.
I bet he could sell swamp land.

Re-writing code, fuel schedules, deleting the sensors inputs and the valve outputs without leaving you stranded.

[Captjake1]

Originally Posted by gatorcq

I would love to meet the guy that said he could reprogrammed the ECU.
I bet he could sell swamp land.

Re-writing code, fuel schedules, deleting the sensors inputs and the valve outputs without leaving you stranded.

Not really sure about the sarcasm in this post.
I have over 10k on it since delete with no issues.
There are plenty of people smarter than me that a skilled at tuning ECM's.

[slemnah]

The original muffler on a pre 2007 C13 was a catalytic muffler. Mine was replaced before I bought it with an Aero muffler. I doubt if it improved the fuel mileage much as no matter how I drive it I get 5.4mpg. It is noticeably louder especially when the Jake comes on.