Are they using FedEx? If so too bad, they suck….
Range Technology Beta Testing
- Thread starter bruss
- Start date
UPS. And yes, 100% FedEx sucks. Worst logistics company on the planet as far as I am concerned. When things come here, If they say Ellenwood or Kennesaw GA in tracking, its almost promised to be late.
Yup, in the last 3 years 95% of all FedEx shipments have been late. And 3 major/expensive ones damaged.
I installed the DFM disable module today on my wife's 23 Tahoe 6.2L It was pretty easy and the video they have with the directions is easy to follow. The HC Tahoe comes with 22 inch wheels and the ECM is further set back behind front clip, so it was tighter working space.
When I went to hook up the negative battery terminal the horn went off and I damn near pissed myself. Had to hit the key fob to stop it. Had to roll the window down and up to complete the ecu reset.
It started clean and idle was normal with no detectable difference from stock. The Tahoe is much quieter than the ZR2, so it'd not directly comparable.
I drove about 15 miles in the neighborhood and the freeway. Not much noticeable difference getting through the neighborhood while driving under 25 mph in Normal mode. Of course, the first thing I noticed is the auto stop is disabled and that's worth it alone. The second thing I noticed when I got out on the Parkway was that shifting was smooth and the transmission stayed in the meat of the powerband longer around 3k+rpms, especially noticeable when under constant acceleration. Also noticed that when letting off the throttle the transmission did not shift as quickly and also held rpms a bit longer.
When I got closer to the freeway entrance, I put it in Sport mode. Throttle was more responsive and transmission really held the rpms good when accelerating hard on the on ramp. When I let off the throttle it really down shifted slowly, so if you got back on the throttle it was really responsive.
Ran the second part of the freeway in Tow mode and it was more of the same, but really kept the rpms higher. Would really need to test this with a load, but seemed strong. Did not test Terrain mode.
Transmission temperatures were normal, coolant temps were normal, and oil pressure was responsive during acceleration/deceleration.
No wierd exhaust note or gurgling sound when idling or cruising. Again the exhaust is quieter on the Tahoe, so not a direct comparison.
I filled up the tank and will have some idea about mileage by next weekend, but expect it to be about the same. My wife gets about 14.5 to 15 mpg on her commute. Long term average on Tahoe is about 15.5 mpg.
Overall, I think this module does offer some noticeable performance enhancements. With the automatic stop disabled, I think it's worth the money. Not sure how long before we know about whether it offers long term protection, but to me that's a years long journey.
When I went to hook up the negative battery terminal the horn went off and I damn near pissed myself. Had to hit the key fob to stop it. Had to roll the window down and up to complete the ecu reset.
It started clean and idle was normal with no detectable difference from stock. The Tahoe is much quieter than the ZR2, so it'd not directly comparable.
I drove about 15 miles in the neighborhood and the freeway. Not much noticeable difference getting through the neighborhood while driving under 25 mph in Normal mode. Of course, the first thing I noticed is the auto stop is disabled and that's worth it alone. The second thing I noticed when I got out on the Parkway was that shifting was smooth and the transmission stayed in the meat of the powerband longer around 3k+rpms, especially noticeable when under constant acceleration. Also noticed that when letting off the throttle the transmission did not shift as quickly and also held rpms a bit longer.
When I got closer to the freeway entrance, I put it in Sport mode. Throttle was more responsive and transmission really held the rpms good when accelerating hard on the on ramp. When I let off the throttle it really down shifted slowly, so if you got back on the throttle it was really responsive.
Ran the second part of the freeway in Tow mode and it was more of the same, but really kept the rpms higher. Would really need to test this with a load, but seemed strong. Did not test Terrain mode.
Transmission temperatures were normal, coolant temps were normal, and oil pressure was responsive during acceleration/deceleration.
No wierd exhaust note or gurgling sound when idling or cruising. Again the exhaust is quieter on the Tahoe, so not a direct comparison.
I filled up the tank and will have some idea about mileage by next weekend, but expect it to be about the same. My wife gets about 14.5 to 15 mpg on her commute. Long term average on Tahoe is about 15.5 mpg.
Overall, I think this module does offer some noticeable performance enhancements. With the automatic stop disabled, I think it's worth the money. Not sure how long before we know about whether it offers long term protection, but to me that's a years long journey.
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ZR2EDDYB
Well-known member
Can confirm this is worth the purchase.
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I wouldn't plan to remove mine. My dealer had been really good and I've brought three trucks to them for service and they were tuned with the tuner in the center console. Never had warranty issues, but the only issue I've had was emissions sensor issues on my Duramax and it was a common problem.
I did another 22 miles today to the shooting range to shoot some sporting clays. Tahoe got 15.5 mpg on the way out and 17.1 mpg on the way home, for about a 16 mpg average. Mostly flat terrian and light breeze, I drove it the way my wife would. Probably would not be the same on my ZR2.
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600 miles since I installed mine, fuel economy still running .2 MPG better than before so I'm comfortable saying it's not going to hurt the economy.
Other than the smoothness and sound the biggest thing I notice is how it holds onto gears especially at lower RPM. where it used to flutter and shift down now it just holds on.
100% satisfied with it.
Other than the smoothness and sound the biggest thing I notice is how it holds onto gears especially at lower RPM. where it used to flutter and shift down now it just holds on.
100% satisfied with it.
RMBOzr2
Member
Now that Iv got mine plugged up all I hear is that stupid flapper valve on the exhaust. That’s getting cut out very soon.
SGRACING
Well-known member
I emailed them as well, they emailed me back and stated it's impossible for there device to drain the battery because it is installed after the ECM.. I Quote.
Hey Steven,
Battery draw it’s not an issue with this new unit because it doesn’t go to the OBD2 port. It goes directly to the ECM.
Thank you,
Customer Support
Nice, one less thing to worry about
SGRACING
Well-known member
We need to Start a new thread on a device to limit speed check and tire size variations..
MNNJR69
Well-known member
MNNJR69
Well-known member
Can confirm it works outstanding! Couldn't wait till morning....laying in bed thinking about it drove me nuts and I couldn't sleep so I grabbed the creeper and went out and installed it. Super simple. Works fantastic. The website says that some 1500 models experience DFM activation when the ECM register 0% throttle input, but that is not the case with mine. Fires all 8 all the time! It seems as though it idles much better and seems to shift easier, but as mentioned it does seem to hold RPMs when downshifting a little longer. No complaining for me. Been waiting for this module for 2 years now. Now they need to step up their game and get a pulsar working with the newer models. That way we can remove the cap on the speed limit, adjust tire size, gear ratio, Speedo, etc etc. Finally sounds like a proper American V8! I have an oil catch can so I'm not worried about the oil consumption but I will monitor to see how long it takes to fill as opposed to before the module was installed. On a road trip next month I will compare the fuel consumption with prior trips. Extremely happy with this purchase! So far worth every penny.
I don't think mine is shutting off at 0% throttle either. Hard to tell on Tahoe cause it's so quiet but seems to just idle smooth regardless of throttle input.
MNNJR69
Well-known member
Anybody forward that experience to Range?
I would, but it's gonna cost them another unit shipped to my house for my truck. I don't work for free!
Silverado ZR2 Photos
Silverado ZR2 Photos
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