E39 540i/6 with VFE stage 1 s/c [Archive] - Bimmerfest - BMW Forums

: E39 540i/6 with VFE stage 1 s/c

04-30-2007, 07:18 PM
I searched a couple of different forums on this topic and have not been able to find much info specific to the E39 540. I am looking at the VFE stage 1 s/c kit and am wondering how reliable (or practical) it would be for a daily driven 2003 540i 6-spd. I drive about 200 kms. a day (round trip) to commute to and from work. That distance is about 95% highway. On evenings and weekends I would have the occasional city drive... but no more than about 20% of my mileage is city driving. My car currently has 128,000 kms (80,000 miles).

What are everyones' thoughts on that?

04-30-2007, 09:44 PM
You must be filling up your tank every third round trip. I believe with a S/C installed on an e39 540i MPG will decrease significantly.
Sorry but no clue on VF reliability.

05-01-2007, 04:52 AM
Yep, every 3rd round trip I do fill. I do not let my tank run too low so it is usually on the 3rd day out that I fill. If I wanted to squeeze it I could run it until day 4 morning but I wouldn't do that to the poor fuel pump... lol

I realize that my mileage will decrease, but on that note any real world experience on exactly how much will be helpful. I know that it largely relies on how heavy your right foot is... lol but I would not mind getting an idea from other guys who have this setup.

M Kelly
05-01-2007, 02:48 PM
Some of the responces are from F/I owners. They probaly would have better insight on the subject. Mike Kelly

05-02-2007, 02:25 PM
Now I can only speak in terms of a 530, but my mpg didn't really drop all that much after my VF charger was installed. Well that's after I stopped mashsing the trottle to the floor for grins, and settled into realistic dail driving.

15,000 miles and 14 months with no issues other than routine maintenance.

05-02-2007, 06:18 PM
Well that's not a VF kit but I believe they're similar.


07-26-2007, 12:08 PM
I do not have a SCrg on my 540 but I see no reason why your milage should deteroriate a significant amount.

If you are light on the throttle I would expect your milage would not stray far from stock. Sure you are spinning the SCrg but that alone will have little affect.

08-12-2007, 08:49 PM
Hey gas is expensive, but the SC power is worth the trade off. I just dropped a VFE in my 530i which significantly helped boost my grin effect. I haven't noticed much of a gas mileage drop off. I think it really depends upon how heavy your right foot gets after you install the "go faster" mod. :thumbup: