With the success of our exhaust systems for the VQ35DE and VQ35HR, we set out to design a solution for VQ37VHR.  The SOHO Motorsports single exit catback exhaust system is constructed from 3″ diameter T304 18 gauge stainless steel piping providing a 55 percent decrease in weight over the stock exhaust.  This creates a more exotic and aggressive sounding exhaust note, without the rasp and deafening tone some other single exit exhausts create.

VQ37VHR Single Exit Catback Exhaust

Car had roughly 500 miles on it and only modification was the SOHO single exit exhaust.

Unfortunately out of focus but is also stock besides single exit exhaust.

Same car was Video #2.

The system was designed to work with both factory Y pipe and our own SOHO y-pipe that we have become known for.

SOHO Exhaust Forum Y Pipe

With our unique cone-taper style collector the exhaust gases from each bank merge smoothly together and exit our single exit exhaust in the most efficient manner possible. The unique collector in our y-pipe helps minimize any turbulence that may occur as the two exhaust flows merge together into one. Many y-pipes on the market today just force the two flows together creating excessive turbulence and therefore decreased power. This clumsy transition is also one of the main causes for the dreaded rasp on VQ’s. On the SOHO Motorsports exhaust system the gases come together into one stream as the piping diameter gradually increases with the use of our unique cone that increases from 2.5 inches in diameter to 3 inches in diameter over an 8 inch span. With this design the inlet side of the y pipe is 2.5 inches in diameter and the exit is 3 inches in diameter. Allowing the pipe to remain at 2.5 inches in diameter until the merger and then gradually increasing the overall diameter of the pipe to 3 inches creates a vacuum effect making exhaust gases reach a state of higher pressure at the beginning of the collector and in turn a lower pressure at the larger end. As with anything in dynamics, the path of least resistance is the path best chosen and with the overall diameter of the collector gradually increasing with the use of our unique cone the exhaust gases will tend to bring the higher state gases into the lower state therefore gradually merging in the smoothest transition possible as it exits the y-pipe into our amazing sounding single exit cat back exhaust.

SOHO Motorsports Y-Pipe

Of course for some people loud isn’t quite loud enough :), we have included some videos of customers modified cars.

Invidia Non Resonated Test Pipes and Agency Power Y Pipe.

 Top Speed test pipes, stock y-pipe, Motordyne M370 Plenum, Mushimoto MAF Tubes with K&N Drop in Filters