5.3 v4 mode

[mfdrookie516]

Just plug it in... when/if you want to go back to stock, just unplug it.

http://www.autoanything.com/performance-chips/61A6979A0A0.aspx

 

[emanymton]

Anything new since 2013 I have a Tahoe 2008. And I really think it’s hard keeping it in v4 mode. Is there a way without harm to keep it in v4 for longer. AND, will it save me gas?
dont mind it being slow going to work every day. But don’t want to wreck the car.

 

[BG1988]

You must have the unicorn of all 5.3's with this "feature" then lol

the hybrid has Extreme v4 mode you can accelerate in v4 mode

 

[robgreg75]

Anything new since 2013 I have a Tahoe 2008. And I really think it’s hard keeping it in v4 mode. Is there a way without harm to keep it in v4 for longer. AND, will it save me gas?
dont mind it being slow going to work every day. But don’t want to wreck the car.

I have HP Tuners and have reprogrammed my 2010 to run as a 4cyl longer since about a year after getting it. On mine the cam phasing in 4 cyl mode was all for economy, I changed it to power so it could run in 4cyl more. I also played with the timing, no expert was just tracking it and recording driving with the computer to see if detonating. Mine is a 6 speed so I also changed to shift points so it could run in 4cyl more, for example I don't let it shift to 6th until 55mph, factory was like 42 mph. Also I tuned to maximize E85 mileage the factory E85 tables are very conservative and get 14.5-15 MPG on E85 on road trips, even this year with over 250k miles on it (did 3 trips from DFW to Joplin, MO this year and could fill E85 easily)... way better than the 12-13mpg factory.

 

[emanymton]

the hybrid has Extreme v4 mode you can accelerate in v4 mode

Really cool. do you know if this is applyable on the E85?
can you choose modes?
is it original?

 

[emanymton]

I have HP Tuners and have reprogrammed my 2010 to run as a 4cyl longer since about a year after getting it. On mine the cam phasing in 4 cyl mode was all for economy, I changed it to power so it could run in 4cyl more. I also played with the timing, no expert was just tracking it and recording driving with the computer to see if detonating. Mine is a 6 speed so I also changed to shift points so it could run in 4cyl more, for example I don't let it shift to 6th until 55mph, factory was like 42 mph. Also I tuned to maximize E85 mileage the factory E85 tables are very conservative and get 14.5-15 MPG on E85 on road trips, even this year with over 250k miles on it (did 3 trips from DFW to Joplin, MO this year and could fill E85 easily)... way better than the 12-13mpg factory.

Hey!
Ok! what milage do you get on fuel?

 

[robgreg75]

Hey!
Ok! what milage do you get on fuel?

I think I ended up averaging about 1/2 MPG better over the long run from factory. But given I have 253K miles on it and started playing with it at about 25k the HP tuners has paid for itself.

 

[BG1988]

Really cool. do you know if this is applyable on the E85?
can you choose modes?
is it original?

Yes in M4 I can have V8 mode only I use a chip.. IF I let it do the v4 mode for a few seconds then plug in the AFM chip the transmission runs the correct settings other wise the chip screws up the computer for the TCM


. mpg is still good on the highway 23-24 with v8 mode it was running positive fuel trim like +10 to +13 but i figured out a three spark plug cables were loose ....

 

[Charlie207]

Just how does one go about disabling it?? I was under the impression one needed a programmer to do this.

You do need a programmer.

6L80 owner here: Prior to flashing my BlackBear tune I could stay in V8 Mode by shifting into Manual mode, and selecting ratio 5. Per the dashboard display, the engine never entered V4 Mode. I'd shift into either (D)rive, or select 6th ratio once I got over 55mph, like on the interstate.

Post tune, it's gone forever.