I know this topic has been beat to no end but I'm looking into doing a blackbear tune and I was wondering what kinds of gains I could expect to see from a BB tune. I have a 2008 tahoe LTZ with the 5.3 flexfuel. It has 5.5" of lift on 275/65/R20s and I currently have everything stock besides a volant CAI and magnaflow muffler. Any one with any ideas of what I can look to see please let me know. Thanks in advance.
BB tune gains
- Thread starter wbreaux
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Donnie Yukonie
Yates Caretaker
- Joined
- Jul 31, 2011
- Posts
- 5,127
- Reaction score
- 164
x2 , Just remember a 87 tune won't net you much power vs a 93 , Take this into account when deciding . Also Just a FYI make sure you fill your tank with the desired Fuel grade tune before you meet for the tune
Donnie Yukonie
Yates Caretaker
- Joined
- Jul 31, 2011
- Posts
- 5,127
- Reaction score
- 164
For the first time in History I disagree ,unless Im a total idiot I don't think the Offset Of 89 to 93 will net you enough power gains to offset the cost of fuel for it , maybe Im biased who knows just my 2 dollars
I mean I have to fill up at least once a week as it is so it would have to be a pretty big difference to make it worth it in gas. That being said, I only get 9.7 mpg currently so there should definitely be room for improvement.
Each persons experience is going to be different based off what truck they have and what type of driving they do and how they drive their truck. 91 octane does me good because i drive over 20 miles to and from work each day on the highway. Others might not.
I gotcha, thanks for your input man, I drive like 15-20 miles a day but it's pretty much strictly in town. I tow a decent amount in the summer on the highway, but I don't know if that makes any difference at all. Also, the tahoe is currently sitting around 105k miles, again I don't know if that makes any difference.
JennaBear
Resident Ninja
With the 5.3L you should be running a minimum of 89 even on the stock tuning.
I kneeewwwww thats what she would say
Donnie Yukonie
Yates Caretaker
- Joined
- Jul 31, 2011
- Posts
- 5,127
- Reaction score
- 164
JennaBear
Resident Ninja
Cyclinder pressure is what makes power. The difference really is negligible.
I run the 91 Tune on my NBS and there is a big difference in responsiveness and fuel economy(when I drive nice-that is). And you really reap the rewards if you throw in non-ethanol premium(which is only found in certain parts of the state).
Danzigman
Full Access Member
J, what do you think of your BB tune. I know NNBS really benefits from a tune, what about our NBS trucks?
Zed 71
Full Access Member
Driveability will be much improved. If you have not had your spedometer corrected, Justin can adjust for your tire size and you will notice an apparant increase in mpgs. With the increase in power and throttle response it will be hard to keep of the skinny pedal
.Well it woke up my 6-0 pretty nicely. I could easily tell the difference and so could a friend when he took it for a ride(he has a stock 04 Denali). I like the snappy skinny pedal but I also like the fuel economy too. With a tank of non-ethanol premium in it-I was getting a little over 22 mpg on the highway....
I think it is well worth it and it was a no brainer for me-I drove 1 1/2 hours to meet Justin and have the in-person tune done.
MACHO
Full Access Member
Great improvement in drive ability and responsiveness. I did not see any fuel economy improvement after BB tune with the 91 tune. I found that the MPG's decreased slightly.
I'm no gearhead, so what do I know? That being said, if the increased cylinder pressure was negligible, then so are the resultant horsepower gains. Further, we are talking slightly increased cylinder pressures for 150k+ miles. Even a 1% power increase seems like it could impact long term reliability.
Then again, maybe it does nothing. I'm just thinking via the keyboard.
Similar threads
