Performance Programmer
The bolt-on
A Granatelli Big-G Flash Tuner, which contains several performance tune configurations. It can also read and erase computer codes, modify top speed and rev limiters, alter shift timing and increase line pressure in automatic trans cars, and recalibrate the speedometer for multiple gear ratios and tire size changes. $375
The mule
The '01 Camaro SS, now with a Granatelli nitrous-tuned MAF. Power measured at the wheel.
Our take
The peak gains achieved with the performance tune are impressive, but check out the killer average improvement. This car makes more power everywhere, and you can feel it.
Before
Max torque: 340 lb-ft @ 4,700 rpm
Max power: 332 hp @ 5,600 rpm
Average torque: 308 lb-ft
Average power: 244 hp | After
Max torque: 372 lb-ft @ 4,400 rpm
Max power: 358 hp @ 5,500 rpm
Average torque: 345 lb-ft
Average power: 267 hp | Difference
+ 32 lb-ft
+ 26 hp
|
Mass Airflow Sensor
The bolt-on
A Granatelli mass airflow sensor with nitrous tuning (aka nitrous meter) for use with dry nitrous systems. It works like a normal MAF during normally aspirated operation but adds 5 percent more fuel when it sees the juice. $300
The mule
An '01 Camaro SS six-speed with an SLP harmonic balancer and high-flow airbox lid, an Accufab 75mm throttle body, QTP long-tube headers with cats, GMMG chambered exhaust, and a high-pressure fuel pump.
Our take
This Camaro made good use of the increased airflow and performance calibration, and it worked well with nitrous.
Before
Max torque: 328 lb-ft @ 4,700 rpm
Max power: 322 hp @ 5,700 rpm
Average torque: 302 lb-ft
Average power: 248 hp | After
Max torque: 340 lb-ft @ 4,700 rpm
Max power: 332 hp @ 5,600 rpm
Average torque: 308 lb-ft
Average power: 244 hp | Difference
+ 12 lb-ft
+ 10 hp
|