Power Pages: Nissan 240SX

Dyno 2: RS-R Exmag Downpipe

Pros

As with all turbo'd cars, the easier the turbo breathes, the quicker it will spool up, yielding steeper horsepower curves. The RS-R downpipe is 80mm in diameter and fits perfectly with the stock turbo elbow and the catalytic converter. With several passes, we were able to gain consistent pulls with 186.3 peak hp and 176.4 lb-ft of torque. We saw as much as 8 extra ponies between 5000 and 5500 rpm and as much as 10 lb-ft of torque between 2500 and 3500 rpm. The power curve was nice and consistent, without any irregularities.

Cons

Not a con but more a comment: stainless steel? It would add to the bling factor.

Notes

With the freely breathing pipe attached to the turbo, the boost ramped up quicker and even resulted in slightly higher boost levels. Before this installment, the boost had been fairly consistent at its peak of 57kpa (roughly 8.3 psi). This session, the boost levels rose to 61kpa or 8.8 psi.

Air Temperature

80 degrees FahrenheitTemperature difference from previous run: +0 degrees Fahrenheit

Parts

Downpipe, hardware and gaskets

Tools

14mm socket, ratchet, 14mm wrench

Installation Time

20 to 30 minutes

Dyno 2: RS-R ExMag Downpipe
Horsepower: 186.3
Torque: 176.4

By Richard Fong

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