[AltecBX]

I get around 16 - 17mpg on my 335xi sedan driving around the city. What will I get if I get a SSTT installed?

[Hampi]

With the SSTT, with "normal" driving mpg will slightly improve.

[slick101]

i used to get 30-32 mpg highway stock... now with sstt i get 32 to 33.. and city driving i get arround 16-18

[bimmerlex]

my gas mileage got also slightly improved, both, first with my Xede and now with SSTT over stock.

[AltecBX]

How do you get more power and also better mpg? I thought the more power, the less mpg on a car.

[5soko]

i get 16+mpg around town with the SSTT i cant even remember when i was stock it was a long time ago.(15k miles ago)

[uabimmer]

^

yeah i can see that commercial already...

some guy smoking up the rear tires on a 335 and then saying it gets over 30mpg ....hahaa

but it does make sense on the highway

[slick101]

[QUOTE=MarkNg335i;2309171]

Originally Posted by slick101

i used to get 30-32 mpg highway stock... now with sstt i get 32 to 33[/QUOTE]

Are you it's a 335i not a prius

i'm not too sure.. i should try taking it to the prius service center next time...

[AltecBX]

I just don't understand how it makes more power and produces better gas millage. Can somebody explain to me the logic behind this?

[ChaneRZ]

i get 23.9 mpg 60% highway and 40% city.

[Master Deep]

Originally Posted by AltecBX

I just don't understand how it makes more power and produces better gas millage. Can somebody explain to me the logic behind this?

I think the engine is tuned a tad richer stock than aftermarket tunes. So when they tune the car leaner...you use less fuel and create the same power. But if they tune it too lean, then ur engine starts knocking which is bad. They change other stuff too to gain power.

I think this is at least partially right since I just completely made all that up.


In my 325xi step, I avg 13-14mpg in the city. I think I need more power so I stop driving like a lead foot. If you have a more powerful car, you don't push it as hard and you obviously get a higher mpg.

[Dr_Dirt]

Originally Posted by AltecBX

How do you get more power and also better mpg? I thought the more power, the less mpg on a car.

maybe it's a result of not needing to floor the car as much, since there is so much more lower end torque. You only need to floor it in cases where you need emergency accelleration or if you want to break the tires loose at 50mph

[AltecBX]

Still no answer on this question.

"I just don't understand how it makes more power and produces better gas millage. Can somebody explain to me the logic behind this?"

[5soko]

Originally Posted by AltecBX

Still no answer on this question.

"I just don't understand how it makes more power and produces better gas millage. Can somebody explain to me the logic behind this?"

depending on the variances of all the users it most likely is just that, a variance. the SSTT uses the stock power curve and when off heavy throttle everything is in stock trim. from the dynos graphs i have seen the SSTT doesnt run leaner then stock anywhere like other tuns do under 2k or so to help with MPG. then again this alone cannot justify a car spending less gas, there can be other factors, thats just my take. hope that helps any