scan gauge 2 is very cool

[goodguys75]

just put in my scan gauge 2 and it is a cool little thing for monitoring several things..... my main things were water temp and voltage... but has many others that you can do... . anyone else running it too... . Oo.

 

[S.Morris]

I have had one for a few years. I use it to clear and read codes from time to time. You can program it for specific 02 sensors... . used it one time to find which one of 4 was the intermittent culprit.



Will show loading and hp usage on cummins but smartyjr makes them inaccurate.



I usually keep it in my truck to monitor engine coolant temp during warm up. Handy for that.



I have never actually tried using the fuel monitoring system it has... ..... not sure how accurate it is

 

[AH64ID]

I have one and it works great. I usually watch rail pressure, IAT, Coolant temp, and load. Load is FCA load and works the same for me on stock or Jr software.

Mileage isn't accurate on the 04. 5 and 05's, and maybe others because the ECM doesn't report it correctly.

Dodge uses their own protocol for clearing codes and it has never been able to clear the codes on my Dodge (only time I have ever had a CEL was when I forgot to plug in a sensor) but will on my VW.

 

[S.Morris]

How do you get the rail pressure to show. Is there a manual code you have to enter for it??



When I am using the smarty jr the engine load % is reduced by 50% from the exact same conditions as with stock program. Have tried it back to back on same road,



You are correct, the Scan guage wont clear codes on this truck. (I was thinking of some of the other vehicles I have) (My bad),

 

[AH64ID]

I have never seen results like that with the Load. But I wonder if the 04 reports differently? My load seems to be as accurate no matter what SW I have tuned.

If it's calulated engine load on the 04 (not FCA position like I am told 05 is) then it makes sense that it's lower, but I am not sure 50% is what you should see. If it takes 50 hp to do 55 mph then thats 15% load on the stock SW and 11% load on SW3. . just an easy comparison as there are many variables in load.

Go to ScanGauge - Trip Computer + Digitial Gauges + ScanTools and go to the x-gauge function for rail pressure. . It may or may not work on your 04.

 

[Bob4x4]

I have never seen results like that with the Load. But I wonder if the 04 reports differently? My load seems to be as accurate no matter what SW I have tuned.



If it's calulated engine load on the 04 (not FCA position like I am told 05 is) then it makes sense that it's lower, but I am not sure 50% is what you should see. If it takes 50 hp to do 55 mph then thats 15% load on the stock SW and 11% load on SW3. . just an easy comparison as there are many variables in load.



Go to ScanGauge - Trip Computer + Digitial Gauges + ScanTools and go to the x-gauge function for rail pressure. . It may or may not work on your 04.

Position of fca?? It is pwm...

 

[goodguys75]

some of the abbreviations i dont understand... and not listed in the book... the ones that are like 2-3 letters long... . example intake air = IR... . is there a list of these abbreviatons anywere?

 

[AH64ID]

Position of fca?? It is pwm...

I was told that the ECM reports FCA commanded position as load thru the OBDII, which makes sense as in stock form it won't go over 94%, but as I increase power on the SJR SW2 will go to about 97% and SW3 to 99%.



There is no sensor, but based on the PWM commanded position the ECM can state where it should be in related to min and max.

some of the abbreviations i dont understand... and not listed in the book... the ones that are like 2-3 letters long... . example intake air = IR... . is there a list of these abbreviatons anywere?

Intake air in mine is °fIA. Your manual (or one online) should have all the abbreviations.

 

[goodguys75]

I was told that the ECM reports FCA commanded position as load thru the OBDII, which makes sense as in stock form it won't go over 94%, but as I increase power on the SJR SW2 will go to about 97% and SW3 to 99%.



There is no sensor, but based on the PWM commanded position the ECM can state where it should be in related to min and max.







Intake air in mine is °fIA. Your manual (or one online) should have all the abbreviations.

the manual does not have the abbreviations or online, that is the problem...

 

[AH64ID]

Page 6 of the owners manual has them.

http://www.scangauge.com/wp-content/uploads/documentation/sgii-legacy/SGII_UM_5-1.pdf