SKU: 43581379524

Active Autowerke Rotrex C38 Prima Kit - E46 M3

Sale price$4648.41 Regular price$5164.90
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Description

Active Autowerke Rotrex C38 Prima Kit - E46 M3As producer of one of the finest working supercharger systems for the BMW E46 M3, Active Autowerke is proud to introduce the PRIMA PLUS supercharger system capable of exceeding 500 WHP running on pump drawn 93 octane. The PRIMA PLUS is an upgrade to the existing PRIMA supercharger system designed to create MORE horsepower. In collaboration with Frank Smith of Tuning Tech FS, the Prima PLUS SC kit has evolved as a fantastic performer. With numerous

As producer of one of the finest working supercharger systems for the BMW E46 M3, Active Autowerke is
proud to introduce the PRIMA PLUS supercharger system capable of exceeding 500 WHP running on
pump drawn 93 octane. The PRIMA PLUS is an upgrade to the existing PRIMA supercharger system
designed to create MORE horsepower.
In collaboration with Frank Smith of Tuning Tech FS, the Prima PLUS SC kit has evolved as a fantastic
performer. With numerous dyno runs under countless hours all monitored through careful Data Logging and
Lean/Rich evaluation, this PRIMA PLUS supercharger kit is ready for the BMW enthusiast.
Special thanks goes out to Frank Smith and the guys at Tuning Tech,FS, a Active Autowerke Dealer in the
Maryland area to help launch this supercharger system.
The PRIMA PLUS is a centrifugal design supercharger using a conventional fixed drive pulley, but unlike it's
predecessors, the PRIMA PLUS also has variable boost settings of 9.0 psi and 9.5 psi to help attain the
power.
A first in the BMW forced induction industry.
For easy comparisons, here is where the PRIMA and PRIMA PLUS + stands when measuring rear wheel horsepower.
A stock BMW E46 M3 is around 265 WHP. PRIMA SC makes 425 WHP. PRIMA PLUS SC makes 500+ WHP. 

CUSTOMER IMPRESSION:
"...I intend to go to race fuel (104+) in the spring when I can drive it more.
So far the acceleration plants you into the seat. 1st and 2nd gear have the
rear tires searching for grip and I am running a 275 R compound tire. The
car feels alive and the power band is exceptionally characteristic of the
original power plant but just more power everywhere. There is no lag in
power delivery and is easy to modulate in partial and full throttle scenarios...."
MJTSUB
M3Forums member
BMW E46 M3 SC with AA PRIMA PLUS +

HOW DOES IT WORK:
Running without a front mounted intercooler, the PRIMA PLUS + relies on Water/Methanol and precise tuning to
make it happen. When activated by the flip of a switch, the system develops 9.5 psi of boost and 500 + WHP.*

The Water/Methanol system combined with proper software tuning performs flawlessly, but if a problem arises
such as a low WA/Meth fluid level, excessive detonation, etc. there a immediate safeguard built in.
The system will automatically default back to the 6.0 psi level to prevent any damage to the motor.

Now you can enter the F.I. realm with a proven company known for reliability and proven performance.
Active Autowerke invites you to Come Play with Power with your BMW.
*Dyno results achieved with stock motor on BMW E46 M3 running 93 octane fuel.
*Car equipped with exhaust mods like headers, section 1 and a rear exhaust.

KEY FEATURES:
Complete WA/Meth system
Designated trunk mounted WA tank with holding base
WA pump with internal seals and nozzles to accommodate methanol
Non intrusive mounting helps maintain existing factory trunk space (exception Convertible models)
Integrated wiring with fail safe features
Precise software tuning to match designated boost levels
Operates on 93 pump octane
Detailed Step by Step Instructions
PERFORMANCE SPECS:
Boost: 9.5 psi
Stock Horsepower: 333 HP @ 7900RPM
Supercharged Horsepower: 600+ HP @ 8100RPM
Stock Torque: 268 Ft Lbs @ 4800RPM
Supercharge Torque: 393 Ft Lbs @ 8100RPM

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43581379524

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Fredy Linares
Draper, US
★★★★★ 5
Great choice
Fit perfect. I recommend it.
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Reviewed in the United States on December 3, 2025
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S.L
Chelsea, US
★★★★★ 3
Definitely NOT the COLOR that’s advertised but not bad
I got this for my son for him to have his 1st official “dressy” coat for certain occasions. It will do for the price, but as I said in the description, it’s definitely not the color that’s shown in the advertisement. Its also not taken in like the picture. But not bad. It’s more of a camel color than a khaki like the advertisement. My son is 5’9 and has a slim build, I bought a L because he’s tall and this fits fine to be honest. I want him to be able to grow into it next year as well. If you have long arms you may wanna size up.
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Reviewed in the United States on November 28, 2022
A
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ART
Lexington, US
★★★★★ 1
Nothing i wrote my comments above a statement above
Size: XX-Large, Color: Navy Blue
This item was not good quality, so I decided to not not use. It came pretty much wrinkled and folded in some package. And once again, it was not good quality was all wrinkled up you had to Send it to the cleaners to straighten it out and it didn't fit very well. It just wasn't there very good quality, kind of heavy, so so\n I'm not sure if I'll return it or just donate it to the local church. Thank you art cruz
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Reviewed in the United States on April 5, 2026
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Popa Rabbit
Alexandria, US
★★★★★ 5
Fantastic product... fantastic fit !
Size: X-Large, Color: Black
First off, China got this product from their country to ours, then to my hometown.... faster than my own post office could get it across town after much bickering. So... thank you to the Chinese. Complaints about America being better... then start doing better. Secondly the coat was far superior than I even suspected. It fit well and I cannot wait until cooler weather to break it out ! Again... thank you China ! Highly recommend this product.
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Reviewed in the United States on August 25, 2021
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John In NC
Grantham, US
★★★★★ 5
Once You Try Them, You'll Buy More!
Size: 46W x 36L, Color: Stonewashed
I'm tall (6'3"), and when I was young, I used to be thin as a rail (though decades of three squares a day has changed that). So finding jeans that fit well has always been challenging. A long inseam (36") made purchasing jeans at retail stores an exercise in futility. So for many years, I bought my jeans from cataloger Eddie Bauer. Oh sure, I would try other mail order firms from time to time, but never found a pair of jeans that fit comfortably. I'm no longer young (Daddy was feeling his oats when Ike was in the White House) and much of the vanity that plagued me in my youth has dissipated. Be forewarned as you continue reading, that comfort, not appearance, now tempers all my purchasing decisions. It was time to purchase a couple pairs of jeans, and because Eddie is getting awful pricey, I decided to see what was being offered here on Amazon. The price was right, and the reviews were good, so I ordered a pair of these "just to see". Boy, I'm I glad I did!! These jeans are designed for guys who want comfort over a full range of movement. First, the material; although the description says "flex denim", it is not "stretchy" (remember double-knit?). I think they may be referring to the fact that the material is a bit lighter weight than your average jeans, thus avoiding much of the stiffness. The material reminds me very much of some painter's pants I owned years ago; soft and very pliable. Now for the fit; generously cut (though not baggy) in the seat and crotch. No binding of your manhood when you sit or squat! Plenty of room in the legs too. The waste is cut high enough so your belt sits comfortably above your hips, avoiding the embarrassment of plumber's crack when you're on your hands and knees, bent over without your glasses, looking for that damned little screw you dropped. Finally, the inseam length is also generous. When you're sitting with your legs crossed, these pants won't be jacked half-way up your calf. So, in conclusion, if you're trying to make a fashion statement with hip-hugging, tight-legged, twig & berry squeezing pants, you will be sorely disappointed with these jeans. But, if you're a working man, looking for a well-fitting, comfortable pair of britches, I'll bet you a fresh tin of Shinola and a Moon Pie, that you will appreciate slipping into a pair of these jeans!! I just ordered two more pair!!
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Reviewed in the United States on January 14, 2015

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