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Old 11-01-2015, 12:14 AM   #71
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All I have are the engine spec sheets, before the upgrade and after. That's 10 pages each. But only the horsepower and the torque were changes. I don't think this information would help you. Just ask a certified Cummins shop about upgrading the ISB engine from 300HP to 340HP and torque from 660 to 700. That's all you want changed. He will have to get authorization and software password from Cummins. Or call Cummins direct and ask them for a local dealer near you. My dealer is in Canon City Colorado. I live in the Black Forest of Colorado Springs.
I'll call the local Freightliner/Cummins service center Monday and see what the deal is. Did you happen to have to pay anything for the service? Apologies if you already posted that, I don't recall seeing it.
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Old 11-01-2015, 12:23 AM   #72
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No cost to me. I didn't ask my dealer if there was a cost involved.
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Old 11-01-2015, 12:27 AM   #73
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No cost to me. I didn't ask my dealer if there was a cost involved.
It's funny, Everywhere I am seeing references to the 2014 has 300HP/660Tq, the 2015 and 2016 are both supposed to have 340HP/700Tq according to Freightliner specs on their website.

I am picking up a SR300/ BH340 2015 model tomorrow, but was told it was only 300HP. Perhaps it's actually 340, or was supposed to be?

Is this the same thing you went through? I'll have to ask about that.

For reference to the Freightliner docs I am talking about:

2014 http://freightlinerchassis.com/image...gacy-SR300.pdf

2015
http://freightlinerchassis.com/image...r%20Legacy.pdf

2016
http://freightlinerchassis.com/image...egacy_2016.pdf
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Old 11-01-2015, 12:57 AM   #74
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That's what I went through also. But mine came with the LED awning lights and heated mirrors. Those are 2015 SR340 accessories. I asked to have the full complement of 2015 SR340 accessories, so I was also given heat pads for the water tanks at no additional cost. I'm not sure why the dealer had previously upgraded the engine to 340HP. He also threw in a new Forest River rock guard. Basically I now have a 2015 SR340 even though the decals say SR300. Yes it was all very confusing, but I'm happy. Bottom line, I think this must have been a mid-cycle production change as they were going to the SR340s. Check yours for the LED lights on the awning and if it has heated mirrors. If so, then you have a similar situation. You might even have the water tank heat pads too. If not, show them the 2015 brochure which says you should have the heat pads.
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Old 11-01-2015, 01:00 AM   #75
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That's what I went through also. But mine came with the LED awning lights and heated mirrors. Those are 2015 SR340 accessories. I asked to have the full complement of 2015 SR340 accessories, so I was also given heat pads for the water tanks at no additional cost. I'm not sure why the dealer had previously upgraded the engine to 340HP. He also threw in a new Forest River rock guard. Basically I now have a 2015 SR340 even though the decals say SR300. Yes it was all very confusing, but I'm happy. Bottom line, I think this must have been a mid-cycle production change as they were going to the SR340s. Check yours for the LED lights on the awning and if it has heated mirrors. If so, then you have a similar situation. You might even have the water tank heat pads too. If not, show them the 2015 brochure which says you should have the heat pads.
Thanks I'll check on all this.

On my options sheet I see:
LED Patio Awning Lights [$90]

Not sure if that's it. I'll have to check on the heated mirrors when I get there and find the 2015 Brochure so I can compare the features to what I get. So strange.
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Old 11-01-2015, 01:25 AM   #76
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To add to the confusion... Reading your three spec documents for years 2014, 2015, and 2016 I see two different engines. The 2014 shows an ISL 6.7 liter engine with 300HP and 660 torque. The 2015 shows an ISL 6.7 liter engine at 340HP and 700 torque. The 2016 reflects an ISB 6.7 liter engine. I have an ISB 6.7 liter engine that's been upgraded to 340HP and 700torque. The related RPMs are the same for all years and mine also. I wonder why the different engines (ISL vs ISB)! I'm not sure of the difference between them.
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Old 11-01-2015, 09:09 AM   #77
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To add to the confusion... Reading your three spec documents for years 2014, 2015, and 2016 I see two different engines. The 2014 shows an ISL 6.7 liter engine with 300HP and 660 torque. The 2015 shows an ISL 6.7 liter engine at 340HP and 700 torque. The 2016 reflects an ISB 6.7 liter engine. I have an ISB 6.7 liter engine that's been upgraded to 340HP and 700torque. The related RPMs are the same for all years and mine also. I wonder why the different engines (ISL vs ISB)! I'm not sure of the difference between them.
Pretty sure the Legacy never had a ISL engine.we have a 2014 with the ISB and it did come with heated mirrors. I think heated mirrors are actually a standard e en though listed as an option. I've never seen one without them and we bought back in Jan 14.
These engines are pretty darn amazing how they are very upgradable. If it weren't for the smallish mh2500 tranny these ISB engines would be able to go to 360hp and torque over 800 if I'm. Not mistaken. The tranny is the real limiting issue.

I'm going to look into this engine flash this winter as well. I wonder if there is any real noticeable difference in power or mileage?
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Old 11-02-2015, 10:28 AM   #78
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No cost to me. I didn't ask my dealer if there was a cost involved.
Can you give me a pic of what was installed and how?
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Old 11-02-2015, 02:09 PM   #79
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Do you mean a pic of the Rock Guard that was installed?
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Old 11-02-2015, 03:01 PM   #80
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Here's a couple pix of the new Rock Guard. The rig is backed up to trees and a dirt pile so I had to lay down on the ground to take these pictures. When I take the rig out, I'll get better pictures showing the the rig and the rock guard.
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