Change plugs every 100k General Motors launched its 8.1-liter engine - also called the 8100 Vortec - in 2001. I drive mostly highway though, and conservative. Average city / hwy combined is around 10. My 04 averages 12.5 - 13 on the highway at 65. A friend has an 8.1 Av,and gets 13.1 average mpg,over 1 mpg better than me,and i have a mileage tune.: boatman2 Re: 8.1 fuel economy. Any Engine Type 8.1L V8 GAS (13) V8 GAS (3) Any Body Style Crew Cab Pickup (8) Any Submodel LS (1) LT (2) Base (10) Other (4 Avs have the 4L80E,they are more efficient,and going to get better mileage. Click here to view all the Chevrolet Avalanche 2500s currently participating in our fuel tracking program. BIG GREEN 2002 Chevrolet Avalanche 2500 8.1L V8 GAS Automatic 4 Speed Crew Cab Picku 17 Chevrolet Avalanche 2500s have provided 194 thousand miles of real world fuel economy & MPG data. Also, the VIN for the 8.1 will be in the PCM once you read it out.Following shows the average MPG of each of the 10 vehicles in the system. Start with reading the PCMs and posting the files up here, might be able to help more with them in front of me. 4Lx圎 dont on the LS1B, the PCM controls both the engine and trans. If you want to run the 8.1 PCM (they're the exact same PCM btw, LS1B 1MB, just different OS and calibrations), you will need to either segment swap or find another 8.1L OS that has a 4L80E behind it as the Allison has it's own TCM. The engine doesnt care 05 vs 06 OS as long as the calibration is correct, but the vehicle might. I would suggest you use the factory one and change all of the spark/VE tables to match the 8.1 or use the 8.1 PCM and find an 06 OS to flash into it. Once you have the new 8.1 installed, you can either use the existing PCM (factory for your vehicle) or the 8.1L PCM. Just hook up your FS V2, read the stock 6L PCM out.
#8.1 vortec mpg 2500hd license
Only when you flash a controller for the first time are you required to license it. You can read and datalog unlimited controllers for free. Will this be an issue? If I can switch over file my intention is to adjust the tuneup on the stock 8.1liter format to fit my driving style.Ĭan someone give me some insite and pointers on it? I have the V2 Flash scan. Also only thing I dont have from the donor 8.1 liter is the actual vin number.
#8.1 vortec mpg 2500hd download
How can I do this? I am under the assumption that In order to download and save two different programs I would need to buy a second vin licence. Second I want to download the donor 8.1 Liter stock PCM program from its OEM computer to use the file in the 2006 6.0 liter computer. I might use this motor in a different car. First I want to save the 6.0 liter program for a "just in case" situation for a different vehicle at a later date. So where im running into an issue is this. So my intentions are to swap the 6.0l with the 8.1 liter using the current 4L80E transmission and 6.0 liter wiring harness and computer. I have the entire engine including wiring harness and computer.įrom all the research I have done it seems like the current 2006 6.0 liter wiring harness and sensors are identical to the donor 2005 8.1 liter. The new motor is a model year 2005 8.1 liter that came from a donor 2500hd but it had an allison transmission behind the motor. I am in the process of switching motors in this vehicle. This motor is all stock except for it was once tuned by a friend with HP tuners program many many years ago. I have a 2006 chevy 2500hd pickup with a 6.0 liter and a 4l80e transmission in it. I did some searching and either didnt see or just didnt find the answer I was looking for. Im new to the forum so please bare with me for being a newbie.