G-Power mono SK2 S85 V10 E63 M6 supercharger kit results including dyno and highway pulls against a naturally aspirated M6

[Sticky]

G-power in 2013 realized they could not compete with the Vortech based single supercharger kits and released a 'mono' supercharger system. As you may know, G-Power previously utilized twin superchargers for their S85 V10 kits and although this made for a fairly nice kit it was ludicrously overpriced.

Especially when you factor in that their twin supercharger kits would struggle to outflow a large single supercharger. Ultimately this meant G-Power's twin kits which started at $25,500 for the basic setup and went to $32,500 with slightly higher boost offered poor horsepower per dollar.

In comes the new mono kit and here is BimmerBoost's overview from 2013:

The new single supercharger G-Power SK Plus offering starts at $9997.35. Only 4.4 psi of boost is run and the system is not intercooled. That is likely why power output is claimed at only being bumped up to 580 horses from 500 which, well, is weak for $10k.

They do have an intercooled option available with boost at 7.2 psi for $13,010.25. Now this is definitely comparable to what you can get from other companies although the Vortech superchargers G-Powers competitors are using likely have more power capability. The ASA blower (depending on which model, as G-Power does not specify which ASA blower they are using) likely will offer greater response down low but it will not have the same top end flow capability of the Vortech units.

That said, G-Power will raise the boost to 8.6 psi with this system in an SKII offering which includes high flow cats for $19,857.75. At that price point this makes absolutely no sense as one could buy the SKI system, get some test pipes, and change the pulley themselves having more power with a spare $7k in their pocket.

What you see here is the SKII system which is roughly $20k. Cheaper than the twin supercharger kits but still not cheap. Does it perform well? Yes, just not for the money yet again although it is a better value than it was. You get 590 rear wheel horsepower and 470 lb-ft of torque at the wheels for your cash:

This means it easily can beat up on a naturally aspirated or stock E63 M6 as you see in the videos below. Keep in mind these videos come from the dealer in Bahrain who wants to portray this supercharger in the best light to sell as many as possible. That is probably why they have it beating up on a naturally aspirated M6 which it certainly does:

Is G-Power suddenly relevant in the S85 V10 supercharger market again? No. There are still higher performance options out there for less money. This kit would essentially struggle against a supercharged DCT E92 M3 in a straightline battle which is not what you expect from a supercharged S85 V10.

This option will be relegated to overseas cars whose owners for some reason value the G-Power name. This is still well short of the power that Vortech T-Trim cars are making. The kit certainly sounds good and seems to be well sorted.

The appeal of the G-Power name and this supercharger is definitely more for a market like Bahrain than the US.

[e92livin]

I can think of a lot more platforms to spend 25k - 35k on.

[Sticky]

I can think of a lot more platforms to spend 25k - 35k on.

Yeah but early on they were the only SC game in town. They definitely made bank with those who ponied up. Guys who didn't mind paying $40k+ for an SC on a brand new $100k V10 M car a decade ago.

[BigM62]

Weaksauce.

[ricecrackers101]

$25k for a SC and only 590hp.... lol i'd rather leave it stock and spend that money on better things

[lfelunden]

I guess an S63tu powered M car with a flash tune would tear this thing up!

[Sticky]

I guess an S63tu powered M car with a flash tune would tear this thing up!

It would be closer than you think.

One of the higher horsepower S85 supercharger kits I would favor in a top end matchup against a flashed S63TU.

[lfelunden]

It would be closer than you think.

One of the higher horsepower S85 supercharger kits I would favor in a top end matchup against a flashed S63TU.

I want to bring the german autobahn to the US and go nuts... You guys got car, but roads aren't perfect. Here we got SOME (none lol), but the road. What a dilemma man!

It all depends on what flash tune the S63tu is running, as they are NOT comparable!

[Sticky]

I want to bring the german autobahn to the US and go nuts... You guys got car, but roads aren't perfect. Here we got SOME (none lol), but the road. What a dilemma man!

It all depends on what flash tune the S63tu is running, as they are NOT comparable!

We have excellent roads I'm not sure what you mean. The US is pretty big.

On the way to Vegas you can really let a car stretch its legs.

[bavarianmotors]

Hi, this is ayman from Bavarian Motors- the owner of the Sk2 M6 and the reason i am writing this comments is to make things clear ..

the thread had a lot of lies and not very ownest just they have copy what they like
first of all the kit price is 18,400$ for SK2

second i have mentioned we have issue in Vanos High pressure oil leaking so the vanos is not working properly..

3rd keep in mind its 91 AKI.. in totally stock car..


i am sure after we fix the vanos issue it could reach between 610-620 WHP in dynojet..

we did tried stock m5 with BMC Airfilter in the same dyno and it was 416WHP so at least in sk2 their is 200WHP gain over stock car + you got high Quality Product with Many additional hardware which not been provided by a lot of competitors such as the following: Additional fuel pump Additional EKP , High Flow Cats .. Pulley with Clutch ETC......

[tjav8b]

It makes no sense to advertise your product and then make excuses that the car was having problems because no one is impressed with the performance. Fix the car then push your product. I personally don't think your VANOS issue is going to make any difference to peak horsepower. The kit makes expected power for boost level and octane.

[Sticky]

the thread had a lot of lies and not very ownes

It's 100% honest. G-Power's pricing on their dual kits started at exactly what is quoted and went down with the mono kit which is still more expensive than competitors.

I appreciate your additional details but saying we are lying is a lie in of itself.

[bavarianmotors]

Dear friend,

i did't make advertise just people in m5board asking for the status of the project and i have upload for them the dyno sheet and the status.. however i find that the admin in boostaddict open this post and make advertising for project which is not ready to be published and he did't mention at all any thing related to the vanos issue and the fuel octane.

It makes no sense to advertise your product and then make excuses that the car was having problems because no one is impressed with the performance. Fix the car then push your product. I personally don't think your VANOS issue is going to make any difference to peak horsepower. The kit makes expected power for boost level and octane.

[bavarianmotors]

of course you cannot compare BMW with Toyota yaris ..

at the end of the day you got what you have pay for cheap or expensive the product worth every $

It's 100% honest. G-Power's pricing on their dual kits started at exactly what is quoted and went down with the mono kit which is still more expensive than competitors.

I appreciate your additional details but saying we are lying is a lie in of itself.

[Sticky]

of course you cannot compare BMW with Toyota yaris ..

at the end of the day you got what you have pay for cheap or expensive the product worth every $

So the other kits are Toyota's in comparison? Why are they making more power for less money?

Feel free to e-mail Vortech that you think their product sucks. I don't see G-Power competing with any of their top offerings, do you?

The only reason you are stating this is to defend G-Power's inflated pricing which you sell, period.

[bavarianmotors]

Hi this is just example

we are here not to talk only about HP & the kompressor.. its about the whole product it self.. can you compare Intakes or Heat exchanger size or , Additional fuel control unit and the fuel pump or any single pec of the G-power Product with any other plastic intakes and small heat exchanger !!! thats what i mean by you pay for what you got.. also ASA is with oil feed i dont need to worry about maintenance or the oil full or not

good luck

So the other kits are Toyota's in comparison? Why are they making more power for less money?

Feel free to e-mail Vortech that you think their product sucks. I don't see G-Power competing with any of their top offerings, do you?

The only reason you are stating this is to defend G-Power's inflated pricing which you sell, period.

[Sticky]

we are here not to talk only about HP & the kompressor.. its about the whole product it self.. can you compare Intakes or Heat exchanger size or , Additional fuel control unit and the fuel pump or any single pec of the G-power Product with any other plastic intakes and small heat exchanger !!! thats what i mean by you pay for what you got.. also ASA is with oil feed i dont need to worry about maintenance and is the oil full or not

Absolutely these things can be compared. Do you have any hands on experience with the kits you are talking down on right now?

Self-contained blowers might nice for ease of install but what happens when someone wants to change the oil? Or if the blower overheats?

Vortech has self-oiled options. ASA makes nice blowers and I really like them but for all out performance on a 5.0 liter V10 you want a bigger blower. The ASA is great for torque and mid-range but undersized.

Here is what a properly sized blower will do:



Good luck catching that with this G-Power kit. Never going to happen and these other options are cheaper as well which is icing on the cake.

G-Power simply cannot compete with other options dollar per horsepower. They never have, they never will.

[bavarianmotors]

ok can you provide us with Gintani SI Quot !! what they offer in their website is TI KOMPRESSOR And do you think that high compression motor could live for long with 9.84 PSI.. ASA SK2 compressor Could achieved better then that but we are looking for engine safety other then blowing people engine! good luck with your Wars Vs ..........

Absolutely these things can be compared. Do you have any hands on experience with the kits you are talking down on right now?

Self-contained blowers might nice for ease of install but what happens when someone wants to change the oil? Or if the blower overheats?

Vortech has self-oiled options. ASA makes nice blowers and I really like them but for all out performance on a 5.0 liter V10 you want a bigger blower. The ASA is great for torque and mid-range but undersized.

Here is what a properly sized blower will do:


Good luck catching that with this G-Power kit. Never going to happen and these other options are cheaper as well which is icing on the cake.

G-Power simply cannot compete with other options dollar per horsepower. They never have, they never will.

[Sticky]

ok can you provide us with Gintani SI Quot !! what they offer in their website is TI KOMPRESSOR And do you think that high compression motor could live for long with 9.84 PSI..

Obviously that is not a pump gas dyno. It just shows what the kit can do on race gas. This is a 5.0 liter V10 isn't it? Why use blowers the S65 V8 can max out on stock compression?

ASA SK2 compressor Could achieved better then that but we are looking for engine safety other then blowing people engine! good luck with your Wars Vs

M3's make 600 whp all day with boost. The S85 V10 with more material and a better oiling system has to worry?

I think you're worrying about selling kits. If people want to be blinded by the G-Power name they can. There have been better performance options in the BMW world forever.

Good luck convincing people to spend more so you can get a cut.

[tjav8b]

I wish my intake was plastic.