HD 300 H&S - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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Old 07-15-2012, 07:17 PM
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HD 300 H&S

How many people are towing with this tune? and if so how much and what level are you using?
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Old 07-15-2012, 11:04 PM
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I use the 300 hot damn tune (on 300) & S1M to pull a 3000lb boat & a 5000 lb truck camper. The dash mpg says 11.9 as rule. Speed around 60-70 mph. In alaska rolling hills and elevation increase. No problems so far. Try to keep the rpm around 2000-2500

Last edited by AlaskaKodiak; 07-17-2012 at 06:11 AM.
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Old 07-16-2012, 12:24 AM
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Quote:
Originally Posted by RachHandinit View Post
How many people are towing with this tune? and if so how much and what level are you using?
I am using the hd300 for towing. I use either the no power or mild settings. I haven't seen any difference in temps between the 2 settings.
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Old 07-17-2012, 05:44 AM
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I just got back from a river trip towing a 12k lb 37 ft fifth wheel between houston and new braunfels in the hot texas heat.

I towed using HD300 no power (50 HP) and s1m tranny tune. EOT was right around 203 and ECT was right around 199-201 the whole time. TFT never got above 173. EGTs between 650-800.

I definitely had to keep it running about 67-70 mph (1750-2000 rpm) especially with the s1m tune. You dont want to lug the transmission along at low speeds in overdrive. At low rpms my EGT would jump up to 1000-1100 easily.

Dash was showing 15.1 mpg.
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Old 07-17-2012, 10:00 AM
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I tow 12k with hot damn tunes on mild.
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