2008 serria denali 6.2

[DEVILDOG2856]

hey
i just got a 2008 serria denali awd with the 6.2 and 6spd auto. already i have added a k & n cold air kit,corsa cat back exhaust and a air raid t.b. spacer and i am looking to add a programer and was wondering what kinda h.p. and mpg's other people with this same truck are seeing and can you really see/feel a differance with the 87 tune. with 87 being $3.45 a gallon not sure if i would tune the 93 thanks for any help

[06MonteSS]

well, won't notice a LOT of performance increase with only using the 87 tune... since it still uses the stock timing settings and just leans thing out a little bit...

just an honest f.y.i....

you'll be a lot happier with the 93/Diablo tune and 93 octane gas....

can't be worse than me in CT.. I'm paying $4.13 a gallon for Mobil 93 here now... woohoo!!

[cgray]

i have a 07 gmc vmax i noticed a differance in the truck with the 87 tune but when i put the 93 tune in it was night and day. the truck runs better and it is quicker.running 87 gas i only got 18 mpg hwy with 93 i get 21.3 mpg that is more than enough to make me run the 93 tune. and on the track i ran 97 @ 14.65 in the 1/4. don,t think that was too bad. but just what i think go for the 93.