Just got my ECU back and re-installed about 15 minutes ago.
Let me first say, as we do here in south Louisiana. . . YES INDEED!! After hooking everything back up, I went for a little ride. Even from when I first put it into gear, I noticed a difference. The sound is very much like the sound of the engine with ORM, more "dieselly," but much smoother at the same time. Even pulling out of the driveway and accelerating up the street, it was just more responsive, more eager.
Then I took it around the corner to a highway and turned 'er loose. I mashed the go-pedal and the tach pegged over to redline and blip-shifted to second right about the time I looked down at it. Now she's not a drag racer now, but much improved. I did a U-Turn, came to a complete stop, and did it again - same result. Very good initial seat-of-the-pants impression. I'm not saying that it's like the difference between a small 4-cylinder gasser and a Viper, but the difference is noticeable. Definitely not only comparable to the ORM. Plus it's nice to not have the CEL on.
One other thing I noticed is that shifts and power delivery through the transmission seems more smooth, less intrusive. At slow speeds, my trans seemed to not know whether to stay in first or upshift to second before, now, it was seamless going down the street. Also, since the highway is 55 mph limited, when I hit 60 I backed off all the way from WOT. Before, it was as though the truck immediately slowed after lifting off the accelerator, whereas now it actually seemed to coast. Keep in mind that this is brand new to me, so take what I say with a grain of salt for sure.
I will post again with mileage figures. Before the tune (and disconnecting my battery erased the EVIC) I was getting about 26.5 by the EVIC, 23.5 calculated by hand. I will have a pretty fair idea of new mileage by Friday, then I am taking a 400-mile trip which will give a really good idea. I do a lot of highway driving, so my numbers will be overall mpg.
Last, but DEFINITELY not least, if you are going to do this tune or any tune that requires removal of your ECU, UNBOLT THE BRACKET, NOT THE ECU. That one tip made the 2-hour removal into a 10-minute re-install. Two 10 mm nuts with ample ratchet-head space are much better than 4 8mm nuts without. Untold thanks, bugnout.
**MILEAGE EDIT 6/25/09 @ 6:45 am CST**
EVIC showed 32.9 mpg on the Interstate this morning during my 50-mile commute to work. I drive 80 mph (via GPS, not the speedo) when I can, and I also stopped at a store to get a breakfast sandwich and left it idling for ~4 min while I went in. After exiting the Interstate, I spent 15 minutes in slow-speed, stop-and-go traffic trying to get into the plant and my EVIC readout only went down to 32.7 mpg. That's roughly a 6 mpg increase via EVIC, which should translate to 5.5 or 6 mpg increase when calculated by hand. I am running Shell ULSD and I add 6oz of PowerService (silver bottle) and 6 oz of TC-W3 Quicksilver 2-stroke oil every time I fill up.
Very impressed. I will have to wait till I fill up to hand-calculate mpg, and will post after I do.
**MILEAGE EDIT 7/27/09 @ 12:07 pm CST**
EVIC continues to be way off of hand-calculated mileage. Averaging the hand calculations over the past month, I have gained an average of 3mpg over what I was getting before the tune. As stated earlier, if I am on the Interstate (90% of my driving) I am spinning 2400 rpm or so and going 80 mph (via GPS, 84 or so on speedo), and I have larger all-terrain tires on. I was at an average of 23.23 mpg running ORM before the tune, new average over the past month is 26.40 mpg. That mileage is calculated using the trip computer on my Garmin - not the trip odometer on the EVIC console - divided by gallons at fill-up.
If I went 1800 rpm at 64 mph or so, I bet I could get 30 mpg easy, if not more. I am very pleased with the result, and looking forward to the turbo kit.
_________________ In this war of lines, so many have been crossed. Where will it all stop? 2006 Deep Beryl Green CRD Sport *SOLD 1/22/12*Provent, V6 Airbox, Fumoto, Samcos, GDE ECO & TCM Tune, Euro JK TC, Magnaflow Catback 245/70/16 Destination A/T's Boiler's Radiator Skid PlateJeepin' By Al 2.5 inch Adjust-A-Strut Lift, JBA Gen 4.5 UCA's (6/5/10)
Last edited by linewarbr on Mon Jul 27, 2009 1:14 pm, edited 2 times in total.
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