The world’s best-selling exhaust upgrade for the HR & VHR engines are now available with catalytic converters. Motordyne ART CATS are Helmholtz resonated catalytic converters for a smoother, deeper sound with increased power and torque. Developed, patented and made in the USA.
Motordyne ART CATS are Helmholtz resonated catalytic converters for HR and VHR engines yielding smoother, deeper sound with increased power and torque.
Constructed entirely of stainless steel 304 for enhanced corrosion resistance. All TIG welded with inert gas purge, inside and out, for oxidation free welds on the inner and outer surfaces.
Motordyne ART CATS provide the deepest, smoothest sound of any catalytic converter with significantly reduced rasp and drone. ART CATS equalize the exhaust note by boosting the low and high frequencies while reducing the midrange loudness. A trait which is even more important with catalytic converters. The difference in sound is not subtle. These are not conventional catalytic converters. They’re ART CATS!
ART Cats increase power and torque with Helmholtz resonance. By tuning the resonator phase and frequency to the engines exhaust pulses, the resonator (on a cyclical basis) vacuums exhaust gasses out of the cylinders during the exhaust stroke, thus allowing the next intake stroke to draw in more fresh fuel and air. The result is increased power and torque combined with reduced rasp and drone.
Not for AWD vehicles.
We may either ship through USPS, UPS, or FedEx at our own discretion.
Products are usually shipped out Monday – Friday. Please contact us through email for assistance regarding other shipping methods.
Return policy:
When receiving your package, please open all of the boxes immediately to check if all the contents are inside and not damaged. All damaged or defective items must be reported within 2 business days from the day the packaged is delivered. If the package appears to be damaged on the outside, please refuse to accept it from the carrier; or please make sure when signing the shipper's proof-of-delivery slip, you include a note stating that the package is or appears damaged. If you do accept a damaged shipment, please inform us immediately. Depending on the product and where/how it was shipped, it may be necessary for you to deal with the carrier.
If the product received is defective, a replacement will be sent as soon as possible. If you decide to return the defective item, rather than replace it, a restocking fee will be assessed (15-50% depending on the item) and your original shipping and processing charges will not be refunded. Also, returned products must be in its original packaging which allows us to re-sell the product. We will refuse any damaged or products that are not in good condition.
If after 30 days of receiving your product, it proves to be defective, we would like for you to deal with the manufacturer. They will inform you on how to proceed based on their policies.
If you are unhappy in any way, please contact us through eBay messages. We will provide you instructions on how and where to return the product.