Justin from Raleigh, NC brought us his SUPER clean Z32 over the weekend for a tune.



Here is the setup:

JDM VG30DETT Conversion (car was originally an NA)
Stock "manual" turbo's
850cc JECS injectors
300 degree high performance fuel rails
AMS underdrive pulley's (Crank, P/S, Alt, Water pump)
Ashspec Sport sidemount intercoolers
AMZ 15 row oil cooler
Koyo Radiator
Z1 Motorsports 1piece driveshaft
Selin Twin MAF translator (set to AVG mode)
Dual N62 MAF's
JWT intake filters (2x)
Nistune Type 2 Daughter board
Megan Racing 2.4" split downpipes/testpipes
Apex-i Hybrid Megaphone 60mm dual exhaust
Apex-i AVCR boost controller, (1.15 bar)

Tuned on Nistune
(previously on a ROM tune)

Click here for the Video!!!!

Justin's car was tuned with the fans off, with multiple back to back pulls, to simulate a heat soak condition. The red chart is the base pull, and the blue chart is our tune.

The turbos have internal wastegates so it would hit 17.5psi at 65mph and come down to 13.5-14psi almost immediately. This is somewhat typical on these setups with internal wastegates. Here's the actual dyno chart with just whp readings.



Sorry guys, no torque pick up. Someone had the bright idea to close the hood on the ignition pick up when this car was tuned but no worries, there are calculations for this.


Peak Torque was ~420 @ 4500rpm


here is the logic:

Tire Width in (mm): 265
Aspect Ratio: 35
Rim Diameter in (inch): 18
Transmission Gear Ratio: 1.302
Differential Ratio (final drive): 4.08

Transmission Gearing:
1st 3.214
2nd 1.925
3rd 1.302
4th 1.000
5th 0.752

Formula for Horsepower:
(Torque x RPM) / 5252 = Horsepower

Website used to calculate RPM:
Gear-Speed Calculator Program

Dyno results: