My Service Manager says...

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fljab

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Hopefully can explain in writing concisely and w/o long diatribe!

I have a new (6 weeks) Ram 1500 w/3500 miles (trip FL-Mich-FL soon after purchase). I have some mods I want to do and went to talk to them today; how to do it, warranty, cost, etc. My upcoming mods are (in no order):

> New wheels/tires. Stock are steel Tradesman 17". I want to at least do the Express 5 spoke 17" (Can find locally new take offs ~$200/set+mounting with my near new tires), but would really like to go to 20" new take offs ($$$ mod) or scrounging up a set of the '02-'08 20" spare steel wheels. I wanted to know TPMS/warranty/speedo calibration?

> I have a 3.21 open rear ratio. I would like to upgrade to 3.91 LS, either Mopar gears/clutch LS, or aftermarket gears+gear LS. Can they do it, cost, speedo calibration, warranty?

What I got was that tires/wheels/warranty/whatever no problem, but gear change is. The big problem(s) (2) as I understand it is that the wheels are an accessory, but the gear change is an option. Acc is no problem because it can be added after the sale, but an option is something the factory does. That is an issue because ---

Per conversation/SM said that Federal EPA change in ~2014 allows accessory add ons, but not something that was an option at the factory. The big problem is calibrating the speedo, which means going into the vehicle control module/computer, and that means an explanation of why you were there. I didn't think at the time to ask if the rear gears were installed, then could the calibration be for the tires/wheels?

I'm trying to stay clean on warranty, but have a list of a few things I want to do - nothing crazy - but know better than to do anything to the module/computer, because that's a record. I need to know more both of warranty per Mopar, and what the law says. I really thought having them do a Mopar parts LS + gears would be no problem. I could accept as a last resort of losing the rear end coverage, but including the entire truck because they went into the computer to correct the speedo; dunno, that sounds extreme.
 

69GWC

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Guys full of it.
You also wont need to adjust your speedo for the gear swap only if you change tires. dealer cam adjust speedo up to the size the rebal has which is a 285/70/17.
 

UpInSm0kE

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Or order a Hypertech and be done with it. It will adjust gears and tire combo's up to 44"
 
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fljab

fljab

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Or order a Hypertech and be done with it. It will adjust gears and tire combo's up to 44"

Hypertech would adjust in the module/computer and would be known if anyone went in there like in a warranty situation. But yes, I'm aware of the Hypertech kit and have thought about it, thus the conversation today.
 

huntergreen

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Lots of folks have had their dealer change gears and added LAS without warranty l issues.
 
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fljab

fljab

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Lots of folks have had their dealer change gears and added LAS without warranty l issues.

I've read that here; I need to get to the bottom of it. If it is something that is no big deal per FCA and the warranty, then will revisit the dealer with more info in hand. Now, where to start.........
 

sportcoupe

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The big problem is calibrating the speedo, which means going into the vehicle control module/computer, and that means an explanation of why you were there. I didn't think at the time to ask if the rear gears were installed, then could the calibration be for the tires/wheels?

AEV Procal can adjust gears and tire size without really going into computer. $170

https://secure.aev-conversions.com/shop/ram-procal-module
 
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fljab

fljab

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AEV Procal can adjust gears and tire size without really going into computer. $170

https://secure.aev-conversions.com/shop/ram-procal-module

Thanks, that looks like a great product, but there is this notice at the bottom of the page:

"Please note: A visit to your local Ram Dealership and use of the WiTech diagnostic tool is required to complete this procedure. Although your TPMS screen will show the new values, it will not “take” and stop blinking until your dealership completes the process."

It would still require a visit to the dealer, so I'm back to warranty issues again. I didn't know what a WiTech diagnostic tool was, but it looks to be a dealer Dodge item with yearly software licensing fees:

Fiat-Chrysler-Scan-Tool - Scan Tool Resource

EDIT: Reading the above notice again, do they mean a dealer visit only pertains to TPMS mod? One of the features of the AEV Procal is it can adjust TPMS warning limits (flashing on the screen) for larger tires with lower inflation pressures.
 

mohemipar

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Thanks, that looks like a great product, but there is this notice at the bottom of the page:

"Please note: A visit to your local Ram Dealership and use of the WiTech diagnostic tool is required to complete this procedure. Although your TPMS screen will show the new values, it will not “take” and stop blinking until your dealership completes the process."

It would still require a visit to the dealer, so I'm back to warranty issues again. I didn't know what a WiTech diagnostic tool was, but it looks to be a dealer Dodge item with yearly software licensing fees:

Fiat-Chrysler-Scan-Tool - Scan Tool Resource

EDIT: Reading the above notice again, do they mean a dealer visit only pertains to TPMS mod? One of the features of the AEV Procal is it can adjust TPMS warning limits (flashing on the screen) for larger tires with lower inflation pressures.

I have the AEV Procal as do a handful of others here. You can reprogram the tire size in about 30 seconds WITHOUT a trip to the dealer. It will work real time with nothing else but AEV's module. Same exact thing as on the Wranglers. There are Youtube vids. As for the TPMS, you do need to go to the dealer for them to complete the process. It's all in AEV's instruction manual. I would suggest seeing if there is an AEV certified dealer in your area and taking the truck to them. If they sell AEV builds and or parts, they will probably not give you any crap.
 

ColdCase

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The AEV module, or any ODB programer, isn't going to work for 2018 and newer models as FCA put in a firewall. I dunno of anyone that has hacked the firewall but there are some clever folks out there working on access points that bypass the firewall. When FCA puts authentication on the data packets, that loophole will also be closed.

While some manufactures seem to welcome tinkering, like VW I think, FCA seems to want to lock things down. It cost money to lock up with locks and keys, dunno why they are pursuing it.
 
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sportcoupe

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Thanks, that looks like a great product, but there is this notice at the bottom of the page:

"Please note: A visit to your local Ram Dealership and use of the WiTech diagnostic tool is required to complete this procedure. Although your TPMS screen will show the new values, it will not “take” and stop blinking until your dealership completes the process."

It would still require a visit to the dealer, so I'm back to warranty issues again. I didn't know what a WiTech diagnostic tool was, but it looks to be a dealer Dodge item with yearly software licensing fees:

Fiat-Chrysler-Scan-Tool - Scan Tool Resource

EDIT: Reading the above notice again, do they mean a dealer visit only pertains to TPMS mod? One of the features of the AEV Procal is it can adjust TPMS warning limits (flashing on the screen) for larger tires with lower inflation pressures.

I am sorry, I never noticed that note before.
 
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fljab

fljab

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I am sorry, I never noticed that note before.

TPMS only? Not sure, but good advice about finding an AEV certified dealer, and other Ram service departments and get their take on things.
 

maxx442

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Why would you buy a brand new truck with 3.21's just to turn around and put 3.92's in? Believe me, when you see the bill the dealer hands you for the gear swap, it would have been a lot cheaper to have just bought one with 3.92's.
 
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fljab

fljab

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Why would you buy a brand new truck with 3.21's just to turn around and put 3.92's in? Believe me, when you see the bill the dealer hands you for the gear swap, it would have been a lot cheaper to have just bought one with 3.92's.

Because it was a great deal on a truck that had been sitting on the lot for a while and it had a 5.7. But you're right, I should have got one with the right gears. To be honest, the stock set isn't bad so I'll live with it for a while esp in light of latest info.

I am completely in the research part of desired updates including the gears, and intend to talk to not only to other dealers, but specialist shops to get a better picture on what it takes to get it done. I didn't anticipate the dealer saying that the gear change would void the warranty because of the module adjustments. Bouncing ideas off other forum members that want to contribute is part of that research.
 
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maxx442

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Didn't mean to sound critical. I was just viewing it from the cost standpoint.
 
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fljab

fljab

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Didn't mean to sound critical. I was just viewing it from the cost standpoint.


Hey no problem; I understand and you are right on the cost. I guess I looked at my stripper Tradesman with a hemi as a relatively inexpensive new truck to do what I want with and didn't think it was that big of a deal. There are threads here from guys that changed gears; I need to read through more of them and see what all is involved.

If I have to wait due to warranty then I'll wait, gather parts, and do it later. There are a couple of good shops in the area so will get estimates on doing it at the appropriate time. With the 8 speed trans, it has some get up and go the way it is.
 

ColdCase

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Yeah the 8 speed is geared such that changing from 3.21 to 3.92 is not as useful as it was before. I have trouble driving smoothly with 3.21s but then I have a hot rod regular cab short bed version :)
 
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fljab

fljab

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Yeah the 8 speed is geared such that changing from 3.21 to 3.92 is not as useful as it was before. I have trouble driving smoothly with 3.21s but then I have a hot rod regular cab short bed version :)

I also have a standard cab short bed and would like to hot rod it up a bit. I think you're right, having the 8 speed doesn't make the lower gears as important as before, but it will help. I am still going to research it more but thinking now that will have to wait.

Lowering and wheels will at least make it look the part and I can work on other things in the meantime.
 
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