G-power SKII Supercharger Review [Archive]

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Jonmartin

05-05-2009, 01:17 AM

I finally picked up My E90 M3 From Autotalent. They completed the Installation of the Supercharger which was held up by My ECU not making it here on Time for Bimmerfest but Its ok I have it now and I runs Beautifully. The car is running perfectly no lights no limp modes nothing I put abotu 100 miles on it today since I got it. And averaged about 19.2mpg on the Highway at 70mph. I was able to dyno it Shorty after I picked it up to make sure the AFR's were in check and I was making boost to redline. I got to Gintani where I always do my Dynos at and had them Run the car I was able to 2 runs only because they were in a rush to leave to see the game. Before I post the numbers up I want to say this is by far a worth it mod if you can afford it. The car is a complete BEAST now 1 and 2nd gear are borderline useless the DSC goes crazy and with it off there is barely any traction. 3 and 4th on is just the ultimate Rush I got on a Mexican freeway earlier and did 40-120 in what seemed like a blink I was shocked I was going so fast so quickly. I let off as I'd like to enjoy the car and not go to jail.Also I'm impressed at how quite the blower is compared to Vortech blowers in previous cars. Which were noisy and could always be heard. The ASA blower they use in this kit is a real Gem its hard to tell the car is boosted when cruising cept for the BOV noise. The kompressor only has a very slight whine at WOT that sounds pretty cool. But like I said at IDLE you can't even hear the thing which I think is awesome. I like the look of the new Carbon Fiber Air intake box and how it incorporates the Hoodvent and the OEM driver side bumper intake. I will take some Pics tomorrow after I wash the car. If anyone is local and thinking about getting in on the GroupBuy Autotalent has going on let me know I'll take you for a spin. Be prepared to be in love with it instantly though.

Here is my stock Dyno numbers with just Primary cat delete.

http://img.photobucket.com/albums/v240/illest350GT/M3Dyno21709pg1001.jpg

Here is the G-power Numbers on Shell 91 Octane @ 6psi temp about 81 degrees

http://img.photobucket.com/albums/v240/illest350GT/5409M3S-C.jpg

Thats a ~150whp and 109wtq Gain over stock @ 6psi!

Based on Pencil Geeks formula we're looking at 604hp 444lb ft TQ CRANK!:bulge:

Stock=
414 Crank /315whp = 1.314

Supercharged=
460whp x 1.314 = 604.4

338wtq x 1.314 = 444.1

I will Dyno again on 100octane to see the gains then and also I will see if I can get G-power to give me a different pulley at 9psi and see how much power I make then. I will also Dyno on a variety of Dynos to see their numbers I estimate 490~ on a Dynojet / Dynapack as this is a VERY low reading dyno as you can tell from my baseline numbers.

Just posted better Pics 5.14.09
http://img.photobucket.com/albums/v240/illest350GT/G-power014.jpg

http://img.photobucket.com/albums/v240/illest350GT/G-power015.jpg

http://img.photobucket.com/albums/v240/illest350GT/G-power017.jpg

http://img.photobucket.com/albums/v240/illest350GT/G-power018.jpg

http://img.photobucket.com/albums/v240/illest350GT/G-power013.jpg
This picture shows the Carbon Intake going down to the Drivers Side Bumper intake.
http://img.photobucket.com/albums/v240/illest350GT/G-power011.jpg

http://img.photobucket.com/albums/v240/illest350GT/G-power024.jpg

In the mean time my face looks like this :D and I can't get it off.

Laidback

05-05-2009, 01:47 AM

Congrats! and nice write up:goldcup:

Jonmartin

05-05-2009, 02:12 AM

Thanks bro!

dmerk1978

05-05-2009, 08:58 AM

2 questions

1. how much did it run you?

2. how long was install?

it sounds awesome, congrats

Jonmartin

05-05-2009, 10:21 AM

2 questions

1. how much did it run you?

2. how long was install?

it sounds awesome, congrats

1. I got on the Groupbuy pricing for around $13,500.00 + Install.

2. It took about 4days I dropped it of Monday night and the car was ready an waiting for the ecu by Friday afternoon. IF the ecu had came in the I would have went to bimmerfest.

Laidback

05-05-2009, 10:32 AM

Are you running the same stage (II) as tightie?1. I got on the Groupbuy pricing for around $13,500.00 + Install.

2. It took about 4days I dropped it of Monday night and the car was ready an waiting for the ecu by Friday afternoon. IF the ecu had came in the I would have went to bimmerfest.

Jonmartin

05-05-2009, 10:40 AM

Are you running the same stage (II) as tightie?

No G-power revised the kit with a bigger Blower and new intake made of carbonfiber that extends to the drivers side bumper intake and uses the Drivers side hoodvent also.

Laidback

05-05-2009, 11:10 AM

Nice i can't wait to see it in person...bring it to the thursday night dinner meets...No G-power revised the kit with a bigger Blower and new intake made of carbonfiber that extends to the drivers side bumper intake and uses the Drivers side hoodvent also.

E90///M3

05-05-2009, 12:42 PM

wwwooooww! congrats! i just saw the ESS kit through pictures @ Bimmerfest... i'll be talking with them since i tested their ECU Tune, i might as well have their supercharger as well. plus it just looks so clean!

your's just looks MEAN! i love it! congrats!

dmerk1978

05-05-2009, 02:46 PM

are people paying these things staright cash or are they financing, is it just me or does 13,000 just seem like alot of cash to be paying up front. i would finance that **** in a NY minute.

E90///M3

05-05-2009, 03:21 PM

are people paying these things staright cash or are they financing, is it just me or does 13,000 just seem like alot of cash to be paying up front. i would finance that **** in a NY minute.

i don't think you need financing... you're ballin :secret:

dmerk1978

05-05-2009, 03:23 PM

i don't think you need financing... you're ballin :secret:

my problem is hush hushing it from th ol' lady...2000 here 3000 there is easy but 13000 ba blam is kind of tuff...but i am a ninja at heart so me and Bushido will find a way....HI---------YAHHHHHHHHH

E90///M3

05-05-2009, 03:27 PM

my problem is hush hushing it from th ol' lady...2000 here 3000 there is easy but 13000 ba blam is kind of tuff...but i am a ninja at heart so me and Bushido will find a way....HI---------YAHHHHHHHHH

lol... you sound like Robert aka PencilGeek. he tried to hide a certain amount when he got the RS46 Stroker for his car :lolhit:

dmerk1978

05-05-2009, 03:38 PM

Did he get caught because that would scare me the most

E90///M3

05-05-2009, 04:00 PM

Did he get caught because that would scare me the most

yeah he did... he's still alive but i don't know what she said. i know she was mad when he bought his HRE wheels :D

Laidback

05-05-2009, 04:38 PM

lol:laughhard: yeah he did... he's still alive but i don't know what she said. i know she was mad when he bought his HRE wheels :D

Jonmartin

05-05-2009, 10:24 PM

Nice i can't wait to see it in person...bring it to the thursday night dinner meets...

I'm def gonna try this week!.

wwwooooww! congrats! i just saw the ESS kit through pictures @ Bimmerfest... i'll be talking with them since i tested their ECU Tune, i might as well have their supercharger as well. plus it just looks so clean!

your's just looks MEAN! i love it! congrats!

Cool Good luck!

my problem is hush hushing it from th ol' lady...2000 here 3000 there is easy but 13000 ba blam is kind of tuff...but i am a ninja at heart so me and Bushido will find a way....HI---------YAHHHHHHHHH

I dunno I don't have that problem. If its my money then she can't say anything anyway I'll just buy her a purse or something. Either way at no point is "my money" "our money" lol.

M3_LIN

05-05-2009, 11:30 PM

wow... ur car is amazingggggggg

Ed Lin

Jonmartin

05-06-2009, 01:48 AM

wow... ur car is amazingggggggg

Ed Lin

Thanks guy.

Btw Fellas I dug these images up and thought I'd share them showing the CAD design of the original kit and the Inside of the Manifold included with the kit. Its not just some big hollow Air box its got flow optimized trumpets.

http://img.photobucket.com/albums/v240/illest350GT/gpower_s65_sk_airbox.jpg

http://img.photobucket.com/albums/v240/illest350GT/gpower_s65_sk2_cad.jpg

M3_LIN

05-07-2009, 12:41 AM

heheh. nice. i can totally appreciate those cad drawings... must've taken them a long time to draw all that out.

Ed Lin

Jonmartin

05-07-2009, 12:49 AM

heheh. nice. i can totally appreciate those cad drawings... must've taken them a long time to draw all that out.

Ed Lin

Lol I just had to update it the one that was up there was for the previous design this is for the kit I have.

alex310

05-09-2009, 06:06 PM

Real nice

Jonmartin

05-14-2009, 04:32 PM

I just updated the OP with new pics. For those interested in the Groupbuy PM me for pricing. Also the M5/M6 Bi-kompressor kit is available in the Groupbuy Autotalent is offering.

Laidback

05-16-2009, 08:11 PM

Jon,

Glad you made it out and showed us the S2 Gpower on our Thursday night dinner meet, see you guys Sunday:woohoo:

MEX5

05-16-2009, 08:40 PM

Nice write up,,,can I see pictures of your car.

t0e

05-29-2009, 04:43 PM

nice write up,,,can i see pictures of your car.

+1

.........

PencilGeek

12-04-2009, 08:17 PM

yeah he did... he's still alive but i don't know what she said. i know she was mad when he bought his HRE wheels :D

Yeah, I got busted with the HRE wheels because when I bought the car, my wife specifically said "new wheels had better not show up at our doorstep." So yeah, when the HRE's arrived, I was in BIG trouble.

Believe it or not, hiding the stroker motor expense was a lot easier.:)