EXALT Motorsports

San Diego, CA 92020

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Smart Car Turbo System

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08+ SMART fortwo 451 Turbo Kit -Stage 1

70% Increase in Power - 85 Rear Wheel HP
+ Plug & Play - Complete Kit
+ Utilizes Stock Catalytic Converter - Low Emissions
+ Garrett GT20 Turbocharger - 8psi
+ 304 SS Turbo Hotside Shield
+ 304 SS Turbo Mounting Bracket
+ 1 7/8" Turbo Up Pipe
+ 2" 304 SS Turbo Downpipe
+ 2" Magnaflow Muffler
+ FTC Digital Fuel/Timing Computer
+ (3) 270cc Injectors
+ 6061 Aluminum Fuel Rail Spacers
+ Blasted 6061 Aluminum Charge Piping
+ 2" 6061 Aluminum Intake Pipe
+ K&N Air Filter
+ All Hoses, Clamps, Couplers, Fittings
+ Tig Welded construction
+ Perfect Fit & Finish
+ 6-8 Hour Install Time w/Basic Tools & Skills
+ Full Install Instructions
+ Easily Return to Stock at Any Time

Stage 1 does NOT include an Intercooler and runs at 5lbs of boost
Was: $3,499.99
Sale: $3,449.00


Are you a Smart Car owner that wishes you had more power to get up and go? Or maybe you’re interested in buying the environmentally friendly and convenient Smart Car but are deterred by the lackluster stock performance. Well, Exalt has just the solution for you in the SFR Smart Car Turbo System! This turbo upgrade developed by the brilliant minds at SFR will breathe new life into your Smart Car, that even we were blown away by after our first test drive. This Smart Car Turbo System will turn your anemic performer into a zippy, fun to drive, dare I say... sports-car.

The dyno doesn’t lie. After installing the SFR Stage 1 Turbo System on the Smart Car 451, she put down a very respectable 85 Rear Wheel Horsepower or a whopping 70% increase over stock. 85 RWHP may not sound like a lot but given the car’s svelte 1800lb curb weight, this is very respectable and literally turns this car from the slowest thing on the road to a car that will glide through the streets and move around potential hazards at will.

SFR is known worldwide for their expertise in forced induction and top-quality fabrication work. This turbo system for the Smart Car is no exception as every part is Tig welded on special fixtures to ensure a perfect fit and finish. All of the cold side components are made out of 6061 aluminum and hot side parts are made from 304 Stainless Steel. The new found aggressive growl is the result of the quality muffler included in the kit as opposed to some of the cheap “glass-packs” that are so prevelant on the internet and your local exhaust shop.

The SFR Turbo Kit for the Smart Car 451 is designed to be mounted at the top of the engine bay, placing the turbo in its optimum position, well insulated from heat and as far away from the elements as possible. This also allows for the use of a conventional gravity oil drain, eliminating the oil drain back problems some of the other kits suffer from. With a low mounted turbo / intake, like found in other kits, a large puddle could prove disastrous if it splashed on a hot (potentially glowing red) turbo or was sucked into the intake.

The tuning for the SFR Smart Turbo System is accomplished by using a piggy back computer that controls fuel and ignition timing. The Smart Cars ECU which is made by Bosch is extremely sophisticated. This ECU's O2 sensor is constantly making adjustments to the air/fuel mixture to keep it as close to Stoichiometric (14.7 to 1) as possible. This is great for gas mileage but this is dangerous for boosted applications. Thanks to the proprietary engine management system, we found a safe and reliable way to tune the car while still retaining all functionality of the stock ecu. The nicest part of this turbo system is you can go back to stock very easily if you ever had to. Just remove everything and that's it, bone stock again....but what fun is that?

The Speed Force Racing Stage 1 Smart 451 turbo system runs at 5 psi of boost pressure. This delivers anywhere from 85-90 WHP. This is a big improvement from the high 50 horsepower a bone stock Smart will make. Each turbo system comes with everything you need for a complete installation. Typical installation time is about 6-8 hours.


  • 908685
  • New

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  • 38.0 lbs.