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Anyone else lose millage with BB tune?

Hubie151

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Hubie151 Enthusiast

Hubie151

Posted
Posted

Hey guys, had my BB tune for almost a year now, and to be honest, not all that impressed. Havnt noticed much difference, and my driving style hasnt changed and I went from 16.0 average to 16.2 for gas millage. Anyone elses millage go up post tune?

Carder09 Senior Enthusiast

Carder09

Posted
Posted

Well by looking at the mods you have on your truck, your lucky you even seen an increase. Suspension lift, bigger tires etc will decrease mileage, also what tune are you using? 87 89 93? All factor differently.

Nick The Great Senior Enthusiast

Nick The Great

Posted
Posted

I don't understand the question? is the 16.2 number a typo?

 

I know on my truck I can DEFINITELY tell the difference without the BB tune. Not the mileage so much as the 'driveability.' The throttle delay, firmer shifting, all that

Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Loose the tune and you'll know what the tune did for you. I didn't gain any mpg, but I didn't loose either. I did however pickup a performance gain.

 

On my 03, I first had HP3 programmed and never thought it did much till I returned it to stock. I made a decent enough improvement to def. tell the difference when it wasn't tuned. :dunno:

music Senior Enthusiast

music

Posted
Posted

How do you know it's the tune that changed your mileage? Have you tested it the same, with the only difference being stock vs the custom tune? Is performance the same either stock vs custom?

icetraxx Enthusiast

icetraxx

Posted
Posted

I dropped .5-.6mpg according to the DIC in my 08. I did pickup a performance and drivability though. My mods consist of long tube headers w/high flow cats, corsa touring exhaust, and a air raid tube on the stock box. I got better mpg out of my tuned 01extended cab with a a 5.3 with the same performance level but it had 3.73 gears in it. I'm wondering if that is my problem now I to get a set of lower gears. :happysad:

Hubie151 Enthusiast

Hubie151

Posted
  • Author
Posted

The 16.2 is the millage on the DIC, you can tell your average by selecting that option in the DIC. No other mods were added after the tune. Drivability is nicer, and love the sport track mode. Im using the 89 octane one, but debating on weather or not to switch to the 93 as I almost always burn high test, but its hard to tell what octane your getting here in Canada now with the levels of ethanol going up in the fuel grades.

nashss Enthusiast

nashss

Posted
Posted

Well with what it sounds to me you had him have a seperate tune on your tow/haul button it seems which you said your very happy with so without your tow/haul special tune he probably just adjusted a few things to make driveability better and when you want to have fun its just a button away. Not sure what your complaining about. I had a tune on my SS from Zippy and I can tell you it made a hell of a difference. Going from stock to a tune was very nice.

icetraxx Enthusiast

icetraxx

Posted
Posted

I have the 93tune and winter blend and ethanol additives will cause a drop in the mpg. At least that is what I have found down here in the south. I also have the AFM turned off but I haven't seen a change in the mpg. I track distance traveled vs gallons at the pump everytime I fill up. I had a bad gas gauge in my 01 that worked when it wanted to. I used my trip to determine when I need to fill up have not been able to break that habbit.

Jennabear Senior Enthusiast

Jennabear

Posted
Posted

The 16.2 is the millage on the DIC, you can tell your average by selecting that option in the DIC. No other mods were added after the tune. Drivability is nicer, and love the sport track mode. Im using the 89 octane one, but debating on weather or not to switch to the 93 as I almost always burn high test, but its hard to tell what octane your getting here in Canada now with the levels of ethanol going up in the fuel grades.

 

 

The DIC is not the proper way to determine exact MPGs, the only way to do that would be by hand (unfortunately). Do you have an AutoCal? If so, you can send us a log and we can check out your fuel quality. If you are running 91 on your 89 tune, you are not getting everything out of the higher octane that you could be. I would recommend installing the 91+ octane tune to get effective use out of the 91.

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