New 5.3 Owner with questions

[justin99]

I just picked up an 05 gmc sierra with a 5.3. I have tuned 6.0's and 8.1's but never a 5.3. Does anyone have a good starting tune I could view or any ideas on squeezing a few more mpg out. I looked in the respiratory but didnt see alot to chose from.

[kevmar]

theres no difference in a 5.3 to 8.1 tuneing except for more cubes, tune it the same way.

[justin99]

I was hoping they were the same. I am getting ready to download the stock tune for the first time and start playing.

[kevmar]

good luck!