I have my 03 2500 hd. 6.0l
I was avrige 9.6 mpg.
I did the VR stack and a mac cold air and between my 80 miles last night and my 130 today my av mpg went to almost 11.
This was a mix of city and highway.
Not sure what power i gained, but seems to have a little more pep, not much, but a bit better.
Now to tune it and dyno it to find out final #'s.

 

hello,

just noticed on your signature, one of your mods is the LS6 Intake. i heard alot of people sayin it wouldn't fit right b/c it was to low to fit on our trucks. was it simple or hard, and how were the power gains?

thanks man

 

oops that was suppost to be a pm, lol
sry about that

 

i think it fits because its on his z28 and not his truck

 

"99 White M6 Twin Turbo(CAS)Z28"

That's prolly why it's on there!

I wonder if it was all the intake though. It's hard for me to think the VRstack made any difference being just a little plastic sleeve that goes in the TB.

 

oops

 

Your mileage should go up at least 3-5mpg over what it is now with some more break in miles.

 

I told you guys the VR Stack helped gas mileage

Tom

 

I do have the ls6, but on my Z
I dont know exacly what did what, but together they seem to work well.
Im happy, couple more little things and im done till Tony makes a turbo kit for the 2500!!

 

what is a vr stack, how does it work, how much does it cost, where do i get it. i get 11+ on the highway if i keep my foot out of it. less in the city. think it will help me ? will it affect my performance w/ a s.c ?