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  #361  
Old 10-15-2013, 02:39 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by Ross51 View Post
Question to BobT re EGT measurement. I have a MY 2012 but according to the unit I use ( GoPoint BT) and using Dash Command the EGT is not supported on the Jeep? Are you referring to the Catalyst Temp? ( note... Not trying to be smart but genuinely puzzled as I have thought I could not directly read EGT with my vehicle). Looking for info as I currently have removed tuning box because I have some concern re EGT with towing especially. Thanks
I stand corrected. It's been a while since I took the readings. Yes, my scanner does indeed read "CAT TEMP". Sorry for the misleading info. However, as I understand it, the cat and DPF are in the one unit so temperatures should be similar. My guess is that if the WK2 does have an EGT sensor, it will not be able to be read until Jeep eventually releases WK2 specific OBDII coding.
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  #362  
Old 10-15-2013, 03:22 AM
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Thanks for reply, BobT. I agree that the Cat Temp should be similar to EGT , presumably some degrees cooler but not by much given the numbers I see. So I should be able to use this as an indicator of what is happening to EGT with and without diesel chip and at different settings. Perfect. Cheers
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  #363  
Old 10-15-2013, 10:49 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by BobT View Post
I stand corrected. It's been a while since I took the readings. Yes, my scanner does indeed read "CAT TEMP". Sorry for the misleading info. However, as I understand it, the cat and DPF are in the one unit so temperatures should be similar. My guess is that if the WK2 does have an EGT sensor, it will not be able to be read until Jeep eventually releases WK2 specific OBDII coding.
Oh, that stinks. I am not really interested in cat temps, just EGT as that will show how much you can push the engine while chipped. Back to square one!
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  #364  
Old 10-16-2013, 05:46 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by Ross51 View Post
Thanks for reply, BobT. I agree that the Cat Temp should be similar to EGT , presumably some degrees cooler but not by much given the numbers I see. So I should be able to use this as an indicator of what is happening to EGT with and without diesel chip and at different settings. Perfect. Cheers
Let us know what differences you get. I would be most interested. The cat is fairly close to the engine but after the turbo. I understand that there can be a 100-200C drop across the turbo but then again, cats can generate their own heat with unburnt hydrocarbons. Messy but a good guide anyway. Is there an EGT figure that you are trying to stay below?
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  #365  
Old 10-16-2013, 06:55 AM
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Max EGT is a "can of worms" so think I'll stay away from that debate. To me the important thing is to get a baseline pre-chip and then observe impact of chip at various settings. From there " you pay your money and take your choice" but I would be looking for minimal impact given what I read and what I am measuring as Cat Temp.
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  #366  
Old 10-16-2013, 07:02 AM
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Re: Anyone tuned a CRD yet?

Seeing all of the electronic nannies that cars have nowadays, would it be safe to assume that there is some sort of check engine light that might be thrown due to EGT. Anyone somewhat familiar with a diesel should know that EGTs are a critical thing to keep track of.

This could be the reasoning behind the max towing weight since the Ram1500 with the same engine has a higher towing capacity.

Not sure if the check engine light theory could be tracked down but a thought
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  #367  
Old 10-16-2013, 11:14 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by CNY_WK2 View Post
Seeing all of the electronic nannies that cars have nowadays, would it be safe to assume that there is some sort of check engine light that might be thrown due to EGT. Anyone somewhat familiar with a diesel should know that EGTs are a critical thing to keep track of.

This could be the reasoning behind the max towing weight since the Ram1500 with the same engine has a higher towing capacity.

Not sure if the check engine light theory could be tracked down but a thought
Towing capacity is as much a function of frame strength and rear axle size as it is the ability of the engine. The Ram is a full frame vehicle with a much larger rear end and axle that can take the abuse of towing heavy loads. The JGC CRD has the engine to tow much more, but not the underpinnings to handle it.
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  #368  
Old 10-16-2013, 11:47 AM
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Re: Anyone tuned a CRD yet?

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Originally Posted by Bobalouie View Post
Towing capacity is as much a function of frame strength and rear axle size as it is the ability of the engine. The Ram is a full frame vehicle with a much larger rear end and axle that can take the abuse of towing heavy loads. The JGC CRD has the engine to tow much more, but not the underpinnings to handle it.
Didn't even think of that part of it...I stand corrected
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  #369  
Old 10-17-2013, 05:29 PM
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Re: Anyone tuned a CRD yet?

I have an Actron CP9580 scan tool. It's their top of the line. I asked Actron how I can get it to read EGT. This is their reply:

"The cp9580 will never read EGT. The tool is only designed to read Global OBD II information. EGT is an enhanced Diesel parameter that the tool is not designed to read. You would need a much more advanced professional scan tool to get this or any enhanced parameter data.

Bosch Automotive Service Solutions
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DISAPPOINTED!!!
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  #370  
Old 10-17-2013, 06:41 PM
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Re: Anyone tuned a CRD yet?

Sounds like no easy solution to monitor EGT then. I was trying to avoid drilling an aftermarket EGT probe hole in my manifold, now that would cause warranty issues. Maybe using a high-temp temperature sensor on the exterior surface of the manifold would be better than nothing. Not sure how hot the exterior Iron would get compared to the actual gas flow inside it, but at least you could get before chip and after chip temps to monitor.
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  #371  
Old 10-17-2013, 07:57 PM
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Re: Anyone tuned a CRD yet?

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Originally Posted by BobT View Post
I have an Actron CP9580 scan tool. It's their top of the line. I asked Actron how I can get it to read EGT. This is their reply:

"The cp9580 will never read EGT. The tool is only designed to read Global OBD II information. EGT is an enhanced Diesel parameter that the tool is not designed to read. You would need a much more advanced professional scan tool to get this or any enhanced parameter data.

Bosch Automotive Service Solutions
ACTRON TECHNICAL SUPPORT"


DISAPPOINTED!!!
If someone can figure out what the hex data is for the EGT, the ScanGauge-II could be programmed to read it.
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  #372  
Old 10-17-2013, 08:05 PM
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Re: Anyone tuned a CRD yet?

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Originally Posted by nautiboy View Post
If someone can figure out what the hex data is for the EGT, the ScanGauge-II could be programmed to read it.
Looking at the scanguage pages, they've already figured out EGT for fords:

Ford/Lincoln/Mercury Specific : Linear Logic : Home of the ScanGauge

And it looks like they're looking for help from people with CJD vehicles to figure out codes:

Dodge Specific : Linear Logic : Home of the ScanGauge
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