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6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 6 Old 02-07-2013, 03:18 PM Thread Starter
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Is this good information or bad?

We've got a reasonably new (12 months) diesel repair and performance shop in town, so I stopped by today and visited with the Owner. He seems like a very knowledgeable guy, but he did say somethings that concern me.

He asked me what I was running on my truck (Spartan, DPF Delete, EGR Delete with Elbow and GREEN filter). When asked what tune I run as a Daily Driver, his comment was that running a 250HP tune all the time wears out the inside portion of the head gasket (next to the cylinder bore) and is one of the leading causes of head gasket failure on the 6.4. I explained that I run the 250 mainly for the fuel economy and rarely ever "Get On It". He said that it didn't matter and that since I've been tuned with the 250 for 47,000 miles that my head gaskets are a ticking time bomb.

He went on to ask if I towed and what tune that I used. I told him that I also run the 250 and have my gauges set to warn me in case anything gets out of whack. It has been my experience that the difference in boost pressure and exhaust gas temperature between the 210 Tow Tune and the 250 Early Lock tune is negligible. Once again, he stated that I was really hurting my engine. He also said that when towing an EGT of 900 degrees for a prolonged time or an EGT of 1,200 degrees for 60 seconds or more can cause catastrophic results.

Does this guy know what he it talking about or is he full of hot air?
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post #2 of 6 Old 02-07-2013, 03:57 PM
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Some diesel shops are just full of ****. You done the right thing by stopping by and letting the guy pretty much tell you " I think I know what I'm talking about, but i really dont, so dont ever waste your money here". BTW have you ever monitored a regen cycle on a 6.4? During regen cycle the EGTs are above 1100* the whole time. You should be concerned once your temps get above 1500* for a prolonged period of time (20sec or longer)

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post #3 of 6 Old 02-08-2013, 09:07 AM
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345 with 70,000mi on it, and after a HARD WOT run, cooling system built 4.5 psi.

He's a moron.

Specifically the EGT part.

Ever watched EGT's during a regeneration?

I think you've found another self proclaimed expert.

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post #4 of 6 Old 02-08-2013, 02:53 PM
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Yeah, I mean, it isn't good to run high EGTs, but 900 isn't what I would call absolutely terrible.

He sounds like he's spouting of some knowledge he read somewhere. I would avoid him for 6.4 expertise though.

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post #5 of 6 Old 02-09-2013, 06:22 AM
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I'm with these guys. There are a lot of guys on here who have been running the 300 tunes daily for a long time with no issues. The guy might have had experience with a few of his buddies abusing their trucks and seeing failure and he thinks that you should be able to hotrod everywhere and have a bulletproof truck. If you abuse your truck its gonna abuse you... if you take care of it and use common sense it will be dependable for you.
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post #6 of 6 Old 02-09-2013, 08:43 AM Thread Starter
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It does seem like the majority of his business in the younger, race crowd.

They tear them up, give him Daddy's Credit Card and he repairs them.

He told me that it is unbelievable how many kids run-up $3,000.00 to $5,000.00 on their parent's credit cards after a night of street racing or muddin'.
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