CaptTom

Just installed an X2 towing module and Commander. Just wondering about normal values and readings, warnings and defueling. What is normal when driving with no loads? Where should I set my warnings and defueling settings??? Sorry if I am not so well informed....
2003 2500 250hp 5.9 Auto

Thanks for the help!!! What a great site!!!!

LFD2037

Follow this link & you shall find all you need to know about defueling:

https://www.dieseltruckresource.com/...efuel+settings

CaptTom

Thank you very much sir!!!! That helps...I was a little worried about boost as I was WOT and hit 55#'s....:-(

And I am IAFF Local 2919...

LFD2037

Make sure you set the Commander up for your year/model truck. 55 lbs. seems awful high. You might not have it set up right. I've never seen over 45lbs. but an '03 & an '06 are 2 different animals.

RSOPNCO1

Hijacking not intended but how do you do that and can i update it with it still hooked up?

CaptTom

I think your right....I did e-mail quad to find out the proper setting for my module...but I am not getting any of the led lights they are saying I should in the instructions. They don't have the instructions for the X2 done so they send the old ones... When I turn the key on all I get is one red flash...??? :-( I can't really tell a difference when driving the truck. But I do like the commander and the readouts!!!! I feel a little more informed. Everything seems to be working o.k..My settings are where they told me to put then for the year make and module. But I still see boost at 55 when I really get on it...Don't know...

LFD2037

Hopefully someone w/an '03 will chime in 'cause I don't think you could be really getting 55 lbs. w/stock turbo. I know the XZT does some boost fooling but if you haven't done any modding w/your wastegate, that's really high. Under 'Hardware' is where you can set it up for your 'module' & for an '03 CTD.

CaptTom

Been there done that...LOL set up for 03-04 and the XZT module...went for a drive today and pulled 47 just going up the hill to my house empty...not even getting on it...Still waiting for Quad to answer my latest e-mail about how to know if the module is even working or not now that they have changed things.....:-(

duallydave

thats weird,i have an 04 and i modded my wastgate and i have a pred on rkl and an x2race and i cant see 55psi,i can see 40 but not much more,did u update the camander to use all 5 settings on the x2?if not u only get 3 settings,read the rail pres,when u go to higher settings on the x2 the rail pres should go higher too,stock i can see 17k but with the x2 on 5 i see 27k eeeeek.thats pretty high,somtimes i cant feel the dif between settings unless im getting on her,the x2 seems like its a high end box not much low end grunt.

CaptTom

I have the XZT which only has 3 settings. Wonder if I have a wastegate problem???

vzdude

I had my wastegate completely unhooked for awhile and could only get about 38-39 with the quad Hotrace programs. I'm thinking that maybe there is a problem in the map sensor connections.

CaptTom

Checked the wiring again...bout the 5th time now. Even used some dielectric grease on the connectors....still the same.....:-(

JOESHTRDDSL

I have a 03 and never have I seen over 38psi boost. I have a mechanical gauge that in theory should be more accurate than an electronic one. Poss there is a problem with the sensor itselff giving you false readings.

CaptTom

Think I need a new sensor.....I have tried everything and still the same. Whats your boost at idle??? I am seeing 10 to 12 all the time....Any ideas where to get one fairly reasonable???? And is the Map and Boost sensor the same thing???

vzdude

Yes....same thing. I would want a scanner hooked up to know for sure what the ecm is seeing from the MAP sensor. Obviously with everything else unhooked! If it is still reading high, then yes....bad sensor. If not, then you need to look for a partially grounded wire, poor connection, or connector installed backwards, connector installed in the wrong sequence, ect.