So I stumbled on a eBay listing for new and "upgraded" compressor wheels for our S63, E70, X5M's. The company's name is Mamba and they are out of Taiwan. In their eBay auction they also offer additional customization of the compressor wheel (to what extent I don't know).
If you want to look for yourself its eBay item number:191790789186
Here are the most noteworthy stats for the compressor wheel.
"MAMBA" Garrett GT15~GT25 MGT2260SDL 790463 / 790484
P/N:010-2590
Turbo Billet Compressor Wheel 44.5 / 60.40 mm with Performance Extended Tip (BMW X5M S63 E70)
Replace wheel number : 782487-01B
Fit Turbo #: 790463-2, 790463-3, 790463-8, 790484-2, 790484-3, 790484-8
Maximum boost 5 bar / 70 Psi
Balanced By SCHENCK Germany
Wheel Size:
Nose OD : 12.00 mm
Inducer Dia.: 44.50 mm
Exducer Dia. : 60.40 mm
Extend Tappered Tip Exducer dia : 65.43 mm
Tip Height: 4.57 mm
Super Back Height: 3.71 mm
Overall Height : 32.40 mm
Bore: 5.08 mm / Through without thread
Blade : 9+0
Trailing Angle : 45 degree
Rotation: Reverse
Material: Forged Aluminum
Supplier: MambaTek
One Year Warranty
So hopefully some of you guys can field these questions and shed some light on this for me.
1. Anyone have stats for the OEM E70 X5M's compressor wheels?
2. Will we see any noticeable gains from an addition like this? I know that our fuel sys. restricts us but assuming we have DP, exhaust, tune and race filters?
3. Is this a straight swap or would we need additional parts like a new housing?
4. Ever heard of this Mamba company or are they just another eBay special?
5. What else would be needed to make these compressor wheels a smart $/HP decision?
6. Would an upgraded compressor wheel like this raise the need for an updated tune or would there be a minimal degree of change?