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  #1  
Old 08-14-2016, 12:57 PM
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Hot Tune question

Anyone with the Hot Tune and Regen messages have a % gauge that comes up at the bottom showing a % from 90 down to 10 while the vehicle is doing a Regen? I saw a youtube video of a Ram with Hot Tune & Regen Messages having this count down % message during the video of a regen. Mine just tells me to keep driving at highway speeds. Never know when it's getting close to being done until it's over and says "Regen Complete". I really like the % display. Thanks.

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Old 08-14-2016, 01:03 PM
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Re: Hot Tune question



Shows this at 17:28 of the unboxing and review.
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Old 08-15-2016, 09:07 AM
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The initial regen after install did not show a percentage for me. That was a couple weeks ago and I have not had another regen cycle yet. I agree that a percentage display would be nice. To me, it would help justify the $50 upgrade price.
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Old 08-15-2016, 10:26 AM
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Re: Hot Tune question

I have the Hot Tune, and it did not display a percentage (seen it just once so far).
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Old 08-15-2016, 01:16 PM
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Re: Hot Tune question

Our Jeeps have mini regens also, which last 5 to 10 minutes. My jeep has never had full regen in 14,ooo miles. Most of my miles are freeway, will get mini regen around two hundred mile mark.
Using Banks Idash which tells me when regen is active. Idash has no percent for DPF but will give you DPF pressure. Mini regen happens on my jeep when DPF pressure gets around 1.0 on the monitor.
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Old 08-15-2016, 08:00 PM
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Quote:
Originally Posted by jetskifast View Post
My jeep has never had full regen in 14,ooo miles.
Please elaborate. Even with a complete regen your soot level PID output will not be 0%.
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Old 08-15-2016, 09:49 PM
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Re: Hot Tune question

You cannot access % full DPF with Banks Idash. Banks does give you pressure reading of DPF. Have seen 0 psi at idle. Most times reading .under 1 psi. Have noticed when my DPF psi gets to 1 psi, my jeep goes into mini regen. I do not get regen message on my dash. But my Idash monitor changes from off regen to active regen. Cat temp goes into 1200 degree range. This regen lasts 5 to 10 minutes..
I assume full regen, message comes on dash if def is 90% full, message on dash says you must run on freeway for 20
miles.
Have never had regen message show up on dash.
Anybody know what percent full DPF has to be for mini regen, 70%?
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Old 08-16-2016, 12:18 AM
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Ah, so when you say "full regen" you mean the emergency regen that shows an EVIC alert, as opposed to meaning a "fully completed regen cycle".

The spec-standard DPF soot % PID isn't the exact value either, because it jumps to 100% when ready to regen. On a stock PCM this happens promptly when the DPF soot level surpasses 66%.

ScanGauge has the codes to activate the potentially-dangerous modes that are necessary to access the actual value. I'm not aware of anyone who has reverse engineered the sequence (e.g. with a logic analyzer and a ScanGauge) to replicate this access using Torque.
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Old 08-16-2016, 05:49 PM
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Re: Hot Tune question

Mine did not show the % of progress on my JGC, but it did on my Ram. My JGC took about 16 miles at 70 mph to complete the initial full regen cycle after installing the HOT tune. My JGC only had 657 miles on it.

However, my Ram had 16,650 miles on it and it took the same distance to complete its initial post-tune regen.
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Old 08-17-2016, 10:30 AM
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Re: Hot Tune question

chadq2, contact GDE and ask them if the % value is available on the Jeep in the regen message, their customer service is top notch.

Any mention of a mini regen is inaccurate. There is only active and passive regen.

Passive regen is anytime the EGT is hot enough to remove soot from the DPF, such as towing.

Active regen with a factory ECM begins at 65% blockage and generates no EVIC message. The ECM adds fuel to the exhaust stroke to raise EGT to remove soot from the DPF. Should the active regen be interrupted enough times to allow soot to reach 80% or 90% blockage you will get the EVIC message to keep driving. Many ED owners go thousands of miles with never getting this message because the active regens beginning at 65% blockage are completing.

Actve regen with a GDE tune begins at 80% and, if the option is purchased, will show a message for every regen. Active regens with the GDE tune average between 700 and 800 miles, as compared to 100-200 miles on a stock tune.
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Old 08-17-2016, 11:03 AM
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Re: Hot Tune question

So why would I want to purchase the regen message option? If it only occurs every seven or 800 miles what would I do differently when I see the message? Other than just knowing it is happening what would the purpose be?
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Old 08-17-2016, 11:09 AM
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Re: Hot Tune question

Quote:
Originally Posted by Captain Paul View Post
So why would I want to purchase the regen message option? If it only occurs every seven or 800 miles what would I do differently when I see the message? Other than just knowing it is happening what would the purpose be?
So you keep driving and complete the cycle. I'm guessing if you don't get the option the active regens begin at 65% with no message, more often than 700-800 miles. A person should ask GDE this question if they're on the fence about the option.
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