V4 - v8

[07Burb]

Wow...that's impressive then! Does anyone know if BB yields similar results?

 

[emann_01]

im sorry but 3-4 mpg from a tune is just asinine

 

[timjohnson22]

That's what I thought too. But its true

 

[phileaglesfan]

And you don't drive different with the diablosport installed? That's a pretty large gain from just the one mod....

I believe it. GM sets up their tune as conservative, enough to survive 5 years or 100k miles in all normal driving situations with all drivers. They also have to deal with emission laws. A tune can expand on certain areas while sacrificing the other areas somewhat. An engine tune pretty much kills your GM powertrain warranty and not just for the engine. They supposedly also can tell if a tune was ever changed from the stock tune.

 

[07Burb]

I would imagine just a general scan of the computer would be able to tell GM if it'd ever been modified before...

 

[soulsea]

I would imagine just a general scan of the computer would be able to tell GM if it'd ever been modified before...

Unless it's running Vista ... then they won't be able to tell anything about anything and truck will implode. [/macnazi]

 

[07Burb]

 

[timjohnson22]

The GM computer remembers the last 5 start ups. If I want to take it to the dearship for some work all I have to do is down load the original program and start it 5 times, I usually do it about 7 times just to make sure. Every time they run my computer they see the original program.

 

[emann_01]

I believe it. GM sets up their tune as conservative, enough to survive 5 years or 100k miles in all normal driving situations with all drivers. They also have to deal with emission laws. A tune can expand on certain areas while sacrificing the other areas somewhat. An engine tune pretty much kills your GM powertrain warranty and not just for the engine. They supposedly also can tell if a tune was ever changed from the stock tune.

so why doesnt a BB tune do the same??? If a hand held generalized "tune" can do it then why wont a custom tune that is adjusted based specifically on your engine?

Also, BB will sell you a spare ECM and TCM...just swap them before a dealership trip and no worries. And dont forget that GM has to PROVE to you that the modification that you have done is directly the cause of the problem

 

[Dominick]

exactly we dont buy them to save gas--- i was haggling over price and it was geting down to 1-2 dollars per month when the salesman had enough and stated -- look if u are that worried about the payment going up that much, maybe you shoudlnt be driving that car ( we were kidding) i said yeah but ever dollar per month is 72 bucks more i pay for the car overall--- went right over his head.

i accelerat like a grandma and coast -- i get 16 mpg city and about 20 highway and never go above 70 and use the cruise.

its all on how you drive and the gradient of the terrain.

I originbally went in to look at a Hybrid, but couldn't justify the extra $10k. The way my calculation went, It was about a 10 year break even to recoup the 10K. Beside the hybrid didnt come with a spare and I drive 100 miles a day.