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It’s a simple job. I took it to a local shop though because I don’t have a hoist. Unbolt the DPF and bolt in the delete pipe. Make sure you reprogram it prior to taking the DPF out or it will throw a code when you start it up. They charged me an hour and a half, but they spent a while welding up a broken bracket.
No smoke even when wide open. It seems a little peppier, but that could just be wishful thinking. So far, I seem to gaining about 10% fuel economy, but I’ll have a better idea after a few tanks.
I used the CB engineering delete pipe, which is a new offering for them. Nice quality pipe with a bung for the forward-most sensor. The differential sensor lines are left disconnected. I used the GDE off-road tune. All in, it cost about $1,500 CAD.
Hey Marc!
Any fuel mileage data yet? I am seriously considering this. Couldn't one use a (more) conventional oil with the DPF deleted? I have the GDE eco-tune and have been very satisfied.
It’s hard to make a direct comparison, on account of mixed driving conditions and different fuels. I have however gotten four of my five best tanks ever. I would estimate about a 5% to 10% improvement. I was able to maintain equivalent mileage runnng furnace oil as I was getting with diesel also. And here, our diesel and furnace oil are not the same fuel.
It is tough without driving the same routes, speeds, same season, etc. I moved recently and have a new commute and need a few tanks to see. I didn't see a fuel increase with the GDE tune, but I think I just started driving faster. In Denver CO in mixed driving I got 21 mpg. That was what I saw average of many tanks on the same commute. Commuting from Colorado Springs to Denver (mostly highway) cruise set on 75 mph, I got 30 mpg. That was about the only good thing about that commute! My new commute is all city, so I expect to see a decrease.
Is your furnace oil kerosene? I know diesel, kerosene and jet are from the same family. I would be afraid to run anything in the Merc' not from the diesel pump!
No, kerosene is another grade yet. I treat the furnace oil with a lubricant, cetane improver and an injector cleaner, so it runs better. Usually for use in the tractors. Furnace oil is diesel #1, and is the next fraction that comes off after kerosene and has a lower freezing/gelling point than diesel #2. Diesel #2 is your standard summer grade diesel at the pump. #1 is also blended into diesel #2 for winter blends. When sold as furnace oil and not as diesel fuel, it does not have the additive packs blended in and therefore no specified cetane number or lubricity value, thus the need for additives. Generally speaking though, the price of furnace oil is not that much better, and after the cost of additives + lower energy content, you aren’t saving money, so it’s not really worth the effort or risk of getting fined.
BTW if you buy bulk fuel, it’s better to get diesel #2 for winter and then treat with an anti-gel. You’ll get much better fuel economy on account of the higher energy content. #1 blends, come at a cost in reduction in energy content without giving that great of an improvement in gelling point.
Basically kerosene, #1, and #2 will all run fine in any Diesel engine, but long-term can cause problems (due peak cylinder pressure and wear) if no adduced are used to correct the fuel properties.
So you are assuming that without the DPF, the engine management will not kick in the DPF burn off cycle? I am not sure if it senses back pressure or if it is done via a drive cycle. What is your understanding of it?
The DPF regen cycle is initiated by the Differential Pressure Sensor. There are two bungs, one before and one after the DPF that connect airlines to the DPS to detect the exhaust pressure difference and determine when it is time to regen.
Have you noticed any other gains with the dpf delete? Quicker spool, feel more free flowing/ more torque with the less restriction?
Are you still running OEM mufflers?
Always been curious what the best route would be as part of the DPF delete such as going bigger exhaust or high flow mufflers to get most power and fuel economy.
It’s hard to say which mod made the most difference, but there is roughly 30hp more and about 100ftbls more. It pulls strong to over 200kph but I don’t have any numbers for you I don’t notice any turbo lag at all.
Still the stock mufflers.
Unfortunely, the dfp is long gone and no longer for sale.
I’ve got the GDE custom/off road tune. I think you might be able to save some money and find a local custom exhaust guy for the pipe. I use Amsoil oil, and even after 20,000kms it’s still good.
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