"Noweeds" Out Of South Dakota Builds The Aftermarket's Most Advanced Exhaust Diverter

The '65 Chevelle featured in this home video is powered by a 450-horse, LS1 mill, and the car is a straight-bodied, "door slammer" that's clean and ready to cruise. But as we watch the video further, there is a sound that hits the ear that just doesn't sound quite right. It's almost as if the Chevelle's exhaust system comes with its own "volume adjustment knob," but how could that be physically possible?


The answer lies in what is, without a doubt, the performance market's single greatest achievement since bolt-on, realtime fuel injection: the "Noweeds," twin-butterfly design exhaust diverter. With Noweeds.net's signature, twin-butterfly design, a muffled exhaust note for the street or an open-header note for the strip can be easily achieved with the turn of a single, billet adjustment knob installed inside the car. The butterfly design, in-turn, allows for engine exhaust to be diverted either through a full-on performance muffler or a straight header tube. An industry first, Noweeds' twin-butterfly design is the exhaust market's very first, bolt-on component that allows for a straight-header design without changing your current exhaust/header configuration.

Established in 1999, Noweeds was started on the basis that the performance aftermarket needed a modern solution to the traditional "exhaust dump." After extensively researching the exhaust market, the then-new company was unable to find a component like the one that they wanted, and so they started to manufacture their own.


Currently, Noweeds and their corresponding Noweeds.net website offer a polished, stainless steel version of their exhaust diverter system, and there is no additional cost(s) added for this option. The most innovative, "adjustable" exhaust system on the market, Noweeds has made it possible for all rodding enthusiasts to enjoy street mufflers and straight pipes in one, convenient unit, and without having to make any unwanted tweaks that may prove to be costly later-on.

Edelbrock makes the "E-Force" for '06-'11 Hemis...

With Edelbrock, there’s no such thing as “too much...”

Just when Muscle Car America didn’t think that the limits of late-model performance could be pushed any further, Edelbrock steps-in to prove us all wrong. This time, they’ve developed a system of forced induction for the Mopars, making good use of Chrysler’s free-breathing, modern-day variant of the legendary Hemi.

Introducing Edelbrock’s all-new, E-Force supercharger kit configured specifically for 2006-11 Hemi motors. Based on their popular street applications, Edelbrock’s E-Force is stripped-down to only those parts/components that are needed for the track, while eliminating any of the unnecessary extras that most advanced street-racers like to tweak from default settings. According to Edelbrock, a 6.1 liter Hemi with their E-Force unit bolted-on can easily make 556 bhp with 501 foot-pounds of torque, and of course this comes from a motor that doesn’t need the sky-high, 12.5:1 compression of yesteryear to do it.

According to Edelbrock’s E-Force page, the E-Force unit is for race use only, but with this much late-model power, I think it’s going to be more than a little hard to adhere to that standard...

NOS Sportsman Fogger delivery system...

NOS’ Sportsman Fogger offers flexibility in nitrous injection

As forced induction technology continues to advance, so does the industry. Nitrous Oxide Systems understands the need to manufacture the most accurate and responsive, aftermarket induction systems possible, and this work ethic continues to be evident in the products they sell.

Always on the advance of nitrous-injection tech, NOS does it again with their all-new, Sportsman Fogger system. The Sportsman Fogger system is unique in that it uses a wider range of nitrous and fuel metering jets to build an increase of 50 to 150 BHP. But in the case of the Sportsman Fogger, it’s about much more than simply building instant power with the push of a button; NOS prides themselves on building a nitrous-injection system that delivers an accurate fuel/nitrous ratio at each individual port. The way that they achieve this balance is by placing individual jets within each nozzle. In the case of the Sportsman Fogger, these nozzles can be rejetted, allowing for optimal fuel delivery.

Although NOS does guarantee a horsepower gain of 50-150 BHP, the manufacturer does recommend that any application pushing past 40% of its original output use a forged bottom-end, including pistons and con rods. The Sportsman Fogger nitrous system includes a 10 lb.-capacity bottle, airforce-quality, steel-braided hoses, nitrous and fuel solenoids, “Fogger” injector nozzles,  and all other needed hardware and electrical. NOS does also indicate that the engine needs to have its intake manifold removed during installation of the delivery system.

The kit is also available without a bottle, and for carbureted motors, NOS recommends using a fuel pump that delivers at a rate of 5 to 10 PSI with a flow rate of 0.1 gallons per hour (GPH), per horsepower at 6 PSI.

As is always the case with any application involving nitrous, NOS’ Sportsman Fogger system must be used with caution; the overwhelming cylinder pressures always pose a risk to the bottom-end of even the most built motors. But for a mere $793, NOS will sell you a nitro kit that can be just as variable and just as easily calibrated as any intercooled supercharger or turbo.

- Sal Alaimo Jr., B. A. (7/5/11)

S. J. A.

Plug-and-play EFI from Professional Products...

Professional Products’ Powerjection III changes the face of fuel management systems

Introducing the world’s first plug-and-play EFI...

There is no shadow of a doubt in the minds of most motoring enthusiasts that electronic fuel injection, or EFI, has revolutionized the way in which we manage a motor’s air/fuel ratio. However, even with the invention of EFI, there has still persisted the common problem of dialing-in the air/fuel mixture for several different driving environments; since most fuel injection units on pre-injected vehicles are aftermarket, not as much money has been invested in research as has been on factory-built units. Even with the most advanced aftermarket injection units, troublesome wiring harnesses and manually-adjusted computers have always been necessary to maintain proper fuel management.

A company by the name of Professional Products has put an end to the clutter involved in EFI-installation by inventing what could possibly be the aftermarket’s very first true, plug-and-play EFI system, a unit that they call the Powerjection III. An absolute milestone in fuel injection technology, the Powerjection III is unique in that its plug-and-play nature allows for automatic calibration without the highly-visible wiring harnesses typically associated with an aftermarket EFI unit. The Powerjection unit even accepts the engine’s factory air filter, which means that the unit can actually be installed without ruining the integrity of the engine itself. How does it maintain a motor’s integrity? By allowing the original air filter to be installed with the aftermarket unit, so that the motor appears to be all-original.

Another way that the Powerjection III achieves factory appearance is by placing the ECM, the electronic brain of the injection system, within the Holley-based throttle body of the unit. The ECM is also relatively small in comparison to those used on other aftermarket EFI units. As mentioned earlier, this makes it possible to “hide” the wiring harnesses that are usually very clearly marked on other competing systems.

Above all other system characteristics, Professional Products has proven to be a pioneer in their use of a new Adaptive Learning program, the self-calibrating feature of the Powerjection III that eliminates the need for laptop mapping and tuning. What’s convenient about this “Adaptive Learning” feature, however, is that it still does allow for manual adjustments and tuning, especially for radically-built motors. In fact, the Adaptive Learning feature of the EFI unit can calibrate itself within minutes of being installed on an engine, and as the user drives the car with the new unit installed, the plug-and-play system adjusts to the engine’s profile as soon as the engine itself starts running. The unit also features a 21.5 BAR MAP sensor, allowing the unit to self-adjust to any supercharger or turbo up to 20 pounds of boost. As much as the system can be stretched, anything past 20 PSI or 550 BHP requires manual mapping and tuning, along with a change of injectors. But even when this is the case, the combination of plug-and-play, a mapping sensor and a wideband, O2 sensor makes possible the use of the EFI on a considerably-built performance motor. Not only because of the automated nature of the unit, but because the O2 sensor in itself makes possible the adjustment of the air/fuel mixture across a broader range of compression ratios and cam profiles then a narrow-band O2 sensor, which is the type used on most aftermarket injection systems.

Another significant way in which the Powerjection unit manages fuel is through what Professional Products calls a FuelOnDemand feature. Essentially, it is an electronic fuel pressure controller that follows a pre-set fuel pressure in order to adjust the speed of the fuel being pumped to the injectors under variable operating conditions. In what Professional Products describes as a “returnless” version of the Powerjection unit, the “FuelOnDemand” feature eliminates the need for a return line from the EFI to the actual gas tank of the car, again reducing the amount of wiring and hardware needed to make the unit work.

Most hot rodders and other motor enthusiasts will more-than-likely buy the Powerjection III because of the fact that it can adjust itself to virtually any water-cooled, V6 or V8 platform. But for those engine builders who do wish to self-tune, the entire EFI kit comes with an instructional CD that helps the user to self map and calibrate for virtually any street or race application.

All-in-all then, Professional Products, with their invention of the Powerjection III, has revolutionized the way we look at fuel management as it pertains to the high-performance industry. Carburetors and a lot of other conventional tools of engine performance, once thought of as milestones, have therefore become things of our automotive past.

- Sal Alaimo Jr., B. A. (6/28/11)

S. J. A.