Mike Kojima posted on April 03, 2009 04:56
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| The JWT Dual POP with both right and left filters, velocity stacks and sampling tubes in place |
We called JWT for assistance with our test and we retested the Dual POP on JWT’s Dynopack Evolution 3000 dyno. The Evolution 3000 is a hydraulically loaded brake type dyno that bolts directly to the cars hubs for no slip error. The Dynopack Evolution 3000 is known to be a highly consistent and accurate dyno that closely simulates road load which makes it very desirable for tuning. JWT has the settling RPM on the Dynopack set at 1800 RPM which is 300 RPM higher than where Techosquare sets the settling speed on their Superflow dyno. With less low speed lugging, the engine is lugged less in the crtical initial part of the test with less likelihood of detonation and less ECU meddling with the rest of the power pull.
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| The JWT 370Z Dual POP is a nice looking and sounding system |
When baselining the car, the engine and drivetrain were brought up to full operating temperature on the dyno before the power runs started. To assure as much consistency as possible, power runs were conducted at the same water and intake air temperature, the car being allowed to idle down and normalize after each pull. On the Dynopack the stock 370Z belted out 261.9 whp @ 6550 rpm with 228 lb/ft of torque at 4550 rpm with the now characteristic VHR37 flat torque curve and awesome wide power band. When the Dual POP was installed a consistent increase in power was seen and the 370Z cranked out 265.6 whp @ 6950 rpm and 230.5 lb/ft of torque @ 4550 rpm.
The gains started at 4000 rpm and the greatest improvements were above 5500 with the most impressive peak gains above 6700 to the fuel cut. Although the gains seem modest, the JWT 370Z Dual POP Charger really increased the area under the power curve as the dyno chart below shows.
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| The dyno results, with good gains in area under the power curve |
We feel that the true potential of the JWT Dual POP Charger is going to lie synergistically with other flow increasing mods. Uncork the exhaust and the additional flow of the Dual POP will complement the increase in VE. Add header and tuning with it and it will probably work even better. We intend to test and tune these combos in the near future.
Stay Tuned!
Sources
Jim Wolf Technology
Technosquare