M Performance Pack

[SJTrance]

I have a 2013 XDrive35i with the M Performance Pack which is rated to give it a 15hp bump. I'm pretty happy with its performance and I feel like it's more than a 15Hp increase. I'm just curious as to how people with this factory tune felt when going to a Stage 1 from BM3 or MHD. Is it a significant difference?

[Kapsona]

Originally Posted by SJTrance

I have a 2013 XDrive35i with the M Performance Pack which is rated to give it a 15hp bump. I'm pretty happy with its performance and I feel like it's more than a 15Hp increase. I'm just curious as to how people with this factory tune felt when going to a Stage 1 from BM3 or MHD. Is it a significant difference?

I own same car.

at this point my have upgraded:

VRSF DP, ChargePipe, FMIC, NGK Plugs, aFe Magnum Airforce Stage 2 intake.

MHD Stage 2+ and xHP Stage 3.

Car is radically drives different.

But I remember when I first time go from stock to MHD stage 1 without any physical part upgrade it still improved performance.

[SJTrance]

That is very helpful. Thank you. Did you notice a loss of fuel mileage from going to stage 1? How about after the full bolt ons and Stage 2?

[ryansbmw]

Originally Posted by SJTrance

That is very helpful. Thank you. Did you notice a loss of fuel mileage from going to stage 1? How about after the full bolt ons and Stage 2?

The mods themselves will have little effect on fuel efficiency. A majority of any fuel loss will occur from your foot mashing that pedal more often.

[SJTrance]

Originally Posted by ryansbmw

[

The mods themselves will have little effect on fuel efficiency. A majority of any fuel loss will occur from your foot mashing that pedal more often.

Haha. So true.