Vishnu
12-02-2002, 04:50 PM
Hi guys,
Been living on the dyno for quite some time now. While they are not quite yet final, we came up with some nice ECU calibrations for our Stage Zero kit. The car represented in the following graphs is a 2002 WRX with our pulley and up-pipe. Running on 91 octane. With the stock ECU, after many consecutive learning pulls, it makes a repeatable 179-181 wheel hp. Interesting to notice that the first few runs were in the 170-175 wheel hp range. Gotta love auto-tuning that actually works.
After re-mapping fuel, timing, boost targets, knock correction, temp compensation, etc., tables, the car ended up making a nice and repeatable 204-207 wheel hp with significant torque gains across the board. Boost levels were almost unchanged up until 5200rpm. By 5900rpm, the remapped ECU raised boost by just 1 psi (11psi vs 10psi). By 6500rpm, boost pressures were 10psi vs. the stock 8psi. So yest, boost pressures are still quite conservative.
Still a bit more road testing and multi-car trials to conduct before the maps are considered complete. But so far, we're happy with what we're seeing.
FWIW, on our dyno, most stock WRXs dyno in at 158-162 wheel hp. Most Stage Zero cars dyno between 192-200 wheel hp. This car, in particular, made 194 hp with the Unichip and MBC. So an additional ~10-13 wheel hp is a nice gain. Also interesting is that the car runs richer a/f ratios with more positive knock correction values. And no, there is no CE light
Cheers,
shiv
www.vishnutuning.com
Been living on the dyno for quite some time now. While they are not quite yet final, we came up with some nice ECU calibrations for our Stage Zero kit. The car represented in the following graphs is a 2002 WRX with our pulley and up-pipe. Running on 91 octane. With the stock ECU, after many consecutive learning pulls, it makes a repeatable 179-181 wheel hp. Interesting to notice that the first few runs were in the 170-175 wheel hp range. Gotta love auto-tuning that actually works.
After re-mapping fuel, timing, boost targets, knock correction, temp compensation, etc., tables, the car ended up making a nice and repeatable 204-207 wheel hp with significant torque gains across the board. Boost levels were almost unchanged up until 5200rpm. By 5900rpm, the remapped ECU raised boost by just 1 psi (11psi vs 10psi). By 6500rpm, boost pressures were 10psi vs. the stock 8psi. So yest, boost pressures are still quite conservative.
Still a bit more road testing and multi-car trials to conduct before the maps are considered complete. But so far, we're happy with what we're seeing.
FWIW, on our dyno, most stock WRXs dyno in at 158-162 wheel hp. Most Stage Zero cars dyno between 192-200 wheel hp. This car, in particular, made 194 hp with the Unichip and MBC. So an additional ~10-13 wheel hp is a nice gain. Also interesting is that the car runs richer a/f ratios with more positive knock correction values. And no, there is no CE light
Cheers,
shiv
www.vishnutuning.com