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      02-17-2016, 05:33 AM   #1
Travis1807
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Upgraded X5M Billet Turbo Compressor Wheel $120 including shipping

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?
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      02-17-2016, 07:52 AM   #2
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Mamba makes turbo parts usually for the import japanese market like subaru, mitsu, and Nissan. An alternative to the real deal garrett parts at a fraction of the cost.
They are complete blatant copies in most cases. Not a bad thing for a consumer if it works.... Folks on those respective forums have bought those turbos and made more power than stock. But have also suffered quality control issues too, with little support from the selling vendor.

If you csnnot get the appropriate tune do not bother do not pass go is my opinion
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      02-17-2016, 09:38 AM   #3
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Quote:
Originally Posted by mitch808 View Post
Mamba makes turbo parts usually for the import japanese market like subaru, mitsu, and Nissan. An alternative to the real deal garrett parts at a fraction of the cost.
They are complete blatant copies in most cases. Not a bad thing for a consumer if it works.... Folks on those respective forums have bought those turbos and made more power than stock. But have also suffered quality control issues too, with little support from the selling vendor.

If you csnnot get the appropriate tune do not bother do not pass go is my opinion
Good info. thanks for the heads up.
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      02-17-2016, 05:46 PM   #4
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Our stock compressor dia is 60mm, it looks like these are extended 5mm. So machining is probably required to make the compressor housing fit.

There is another billet wheel listed that looks like it's the same wheel through a different seller. The extend tip diameter number look swapped around but otherwise the same.

http://www.ebay.com/itm/Billet-Turbo...FV47k4&vxp=mtr

I'm running PURE TURBO stage 1 upgrades and didn't have any issues running on the stock tune. Working with BPM motor sports to get a tune for the upgraded turbos.

The limit on our engines is the the MAP sensor only reads to 22-23psi. Most tunes run 20 psi on the stock turbo because it runs out of breath on the topend. Looks like that will be the first limit we'll run into with upgraded turbos. Which will be a problem because nobody wants to support rescaling the pressure map for the 4 bar map sensor newer BMWs use. I asked. Fuel will probably be next after that.

Last edited by Myaddiction; 02-17-2016 at 05:59 PM.
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      02-17-2016, 08:20 PM   #5
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The MAP is not an issue really. You can tune around it with a larger MAF and MAF scaling. Of course, again, tuning and finding a tuner capable on this platform I have yet to see. These are common issues on Subaru's, and other turbo charged imports. There is a whole aftermarket using GM MAP sensors, AEM sensors, etc...
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      02-18-2016, 09:31 AM   #6
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My thoughts, no way am I buying turbos or turbo internals from eBay... I'm intrigued that some of you are doing turbo swaps, but for me, the X5 is just the wife's vehicle... A tune and things, I'm all for... but I'm not going much deeper than that...
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      02-18-2016, 10:48 AM   #7
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Quote:
Originally Posted by mitch808
The MAP is not an issue really. You can tune around it with a larger MAF and MAF scaling. Of course, again, tuning and finding a tuner capable on this platform I have yet to see. These are common issues on Subaru's, and other turbo charged imports. There is a whole aftermarket using GM MAP sensors, AEM sensors, etc...
Not sure what your tuning background is but we don't have a MAF on the S63. If you take apart the air box you'll see it's a straight shot to the turbos.


The MAP sensor would be a simple fix if you can rescale. The problem is we are such a small market nobody wants to spend the time scaling our ecu for the higher reading MAP sensors. Do you have the tools or know a tuner that will do it? The ones I spoke to said no thank you as there are a total of 3 of us with upgraded turbos.
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      02-18-2016, 10:49 AM   #8
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I think the biggest problem is going to be the fueling system. I think around 700hp seems to be the limit of the stock system. Since this engine is direct injection, fitting larger injectors could prove difficult.
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      02-18-2016, 10:56 AM   #9
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Quote:
Originally Posted by Crazy1323
I think the biggest problem is going to be the fueling system. I think around 700hp seems to be the limit of the stock system. Since this engine is direct injection, fitting larger injectors could prove difficult.
There are no upgrades anywhere for these direct injectors, however fueling isn't a problem since S63tu M5 are making over 820rwhp with meth.

The only problem with fueling is if you don't want to run meth. That's true on any BMW turbo motor. The N54 has aftermarket port injection setups but that's not coming to our motor any time soon if ever.

If you don't run meth on these motors your limited to less then 600 rwhp. That's the choices you have.
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      02-20-2016, 06:31 PM   #10
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Quote:
Originally Posted by Myaddiction View Post
There are no upgrades anywhere for these direct injectors, however fueling isn't a problem since S63tu M5 are making over 820rwhp with meth.

The only problem with fueling is if you don't want to run meth. That's true on any BMW turbo motor. The N54 has aftermarket port injection setups but that's not coming to our motor any time soon if ever.

If you don't run meth on these motors your limited to less then 600 rwhp. That's the choices you have.
That's the key, I'm for one not at all willing to run meth injection. I have seen too many cases of blown motors where the meth fails for just a second while the ECU targets too much advanced timing due to the tune being mapped for pump + meth. As I see it the only real way to show improvement is if the tunes are both based on 91 pump gas. After all you can add meth to a car with stock turbos and set more advanced timing to make more power
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      02-22-2016, 05:35 PM   #11
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Quote:
Originally Posted by theaudir8fan View Post
That's the key, I'm for one not at all willing to run meth injection. I have seen too many cases of blown motors where the meth fails for just a second while the ECU targets too much advanced timing due to the tune being mapped for pump + meth. As I see it the only real way to show improvement is if the tunes are both based on 91 pump gas. After all you can add meth to a car with stock turbos and set more advanced timing to make more power
I'm not a fan of meth but I will say that the kits have come along way. As was previously mentioned there is little to no tuning support for this truck which really sucks... These things could really crush it with a good flex fuel to run e85.
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      02-23-2016, 01:14 PM   #12
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Quote:
Originally Posted by theaudir8fan
Quote:
Originally Posted by Myaddiction View Post
There are no upgrades anywhere for these direct injectors, however fueling isn't a problem since S63tu M5 are making over 820rwhp with meth.

The only problem with fueling is if you don't want to run meth. That's true on any BMW turbo motor. The N54 has aftermarket port injection setups but that's not coming to our motor any time soon if ever.

If you don't run meth on these motors your limited to less then 600 rwhp. That's the choices you have.
That's the key, I'm for one not at all willing to run meth injection. I have seen too many cases of blown motors where the meth fails for just a second while the ECU targets too much advanced timing due to the tune being mapped for pump + meth. As I see it the only real way to show improvement is if the tunes are both based on 91 pump gas. After all you can add meth to a car with stock turbos and set more advanced timing to make more power
That's fine and your choice. I'm not selling meth kits and would prefer to stay away from one if possible but it's not possible on the S63 if you want to go beyond a tune and downpipes.

You simply won't make good power on 91 California gas. The blend is not knock resist at all and acts like 89 found else where in the country. It's focused on smog reduction first. You can't break 500rwhp on it in these motors let alone reach the systems fuel volume limits which are much higher if you have the octane to support the boost.

I add E85 to my tank making a E30 blend and you can see the difference right away as timing climbs up without the knock 91 produces even on a stock tune.
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      02-23-2016, 02:08 PM   #13
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My Indy Master Tech told me to stay away from E85!
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      02-23-2016, 03:55 PM   #14
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Quote:
Originally Posted by gixxerboy63
My Indy Master Tech told me to stay away from E85!
I'm sure he was just doing the covering his ass thing, which is the smart move since he has nothing to gain from you running it and you'd have to mix it which most people don't want to mess with.

We can't run straight E85 only because our software can't support it and nobody is going to invest the time in changing that.

Hardware wise there is nothing preventing the use of E85. There's a lot of myths and lack of knowledge about it. This is my 3rd BMW I've used it in (335i and M4) and 5th vehicle. You just need to know what you're doing. It's worth a lot of power but isn't just pump and go.

If it's readily available put 5 gallons in the next time you fill up and you can tell the difference due the more advanced timing unless you're running 93. The difference isn't that large then but there are still gains. I'm still data logging and working with the tune to find out how much E85 I can run and how much power it's worth, but know that E30 is a safe mix that makes power in our trucks.
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      02-23-2016, 10:47 PM   #15
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I only run Shell 93 in my vehicles.
The lack of knowledge is exactly what scares me; A guy who regularly visits my buddy's shop swears by e85, yet he continues to have a check engine light issue every time he uses it.... go figure!
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      02-24-2016, 03:28 AM   #16
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Quote:
Originally Posted by gixxerboy63
I only run Shell 93 in my vehicles.
The lack of knowledge is exactly what scares me; A guy who regularly visits my buddy's shop swears by e85, yet he continues to have a check engine light issue every time he uses it.... go figure!
In a X6/5M? How much is he running? Does he have a tune? If the long term fuel trims go over 20% the ECU will trigger a "to lean" fault. The air fuel ratio is fine but the ECU doesn't understand why it takes the extra volume of fuel to meet the AFR targets. It is because you need @30% more volume with ethanol to meet the AFR targets.

I've seen it numerous times on the stock tune when I add to much E85 in the mix. No impact to the motor.
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      02-24-2016, 10:06 AM   #17
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Quote:
Originally Posted by Myaddiction View Post
In a X6/5M? How much is he running? Does he have a tune? If the long term fuel trims go over 20% the ECU will trigger a "to lean" fault. The air fuel ratio is fine but the ECU doesn't understand why it takes the extra volume of fuel to meet the AFR targets. It is because you need @30% more volume with ethanol to meet the AFR targets.

I've seen it numerous times on the stock tune when I add to much E85 in the mix. No impact to the motor.
What kind of AFR are you getting with your current mix of E85 and pump 91 oct
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      02-24-2016, 10:59 AM   #18
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Quote:
Originally Posted by Myaddiction View Post
In a X6/5M? How much is he running? Does he have a tune? If the long term fuel trims go over 20% the ECU will trigger a "to lean" fault. The air fuel ratio is fine but the ECU doesn't understand why it takes the extra volume of fuel to meet the AFR targets. It is because you need @30% more volume with ethanol to meet the AFR targets.

I've seen it numerous times on the stock tune when I add to much E85 in the mix. No impact to the motor.
So no ill-fated effects as long as the tune is adjusted for it?
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      02-24-2016, 12:19 PM   #19
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Quote:
Originally Posted by Travis1807 View Post
What kind of AFR are you getting with your current mix of E85 and pump 91 oct
The same as stock afr which is high 13's at low rpm dropping to low 12's in the mid range and staying there to redline.

The ECU always operates in closed loop so it will always hit its targets if it is physically capable.
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      02-24-2016, 12:25 PM   #20
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Quote:
Originally Posted by gixxerboy63 View Post
So no ill-fated effects as long as the tune is adjusted for it?
Correct.

As long as your vehicle was made after the 2006 clean air act was passed mandating ethanol use in gas, its fuel system has the right materials to handle it if that's what you're worried about.
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      06-07-2016, 11:03 PM   #21
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Quote:
Originally Posted by Myaddiction View Post
I'm running PURE TURBO stage 1 upgrades and didn't have any issues running on the stock tune. Working with BPM motor sports to get a tune for the upgraded turbos.

The limit on our engines is the the MAP sensor only reads to 22-23psi. Most tunes run 20 psi on the stock turbo because it runs out of breath on the topend. Looks like that will be the first limit we'll run into with upgraded turbos. Which will be a problem because nobody wants to support rescaling the pressure map for the 4 bar map sensor newer BMWs use. I asked. Fuel will probably be next after that.
How are you liking your Pure Turbos, what kind of differences did you feel going from stock to upgraded turbos even though you're on a stock tune?

After seeing this thread - http://f10.m5post.com/forums/showthread.php?t=1267910, I was talking with lfelunden and he said it's not needed on our platform because he claims he can boost beyond the limit of the stock sensors (which I'm guessing is ours since he mentioned it) on the MEVD ECU only.
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      06-07-2016, 11:09 PM   #22
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Quote:
Originally Posted by Myaddiction View Post
There are no upgrades anywhere for these direct injectors, however fueling isn't a problem since S63tu M5 are making over 820rwhp with meth
M5 uses different injectors than we do, so that might be an irrevelant point...I've still got my fingers crossed that we'll get to their level though as I spend more time on the M5 boards than here since they're pushing the limits.
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