The supplied Snow Performance boost switch consists of high-quality Teflon parts with gold contacts. The boost switch sense boost and activates the methanol injection system at your preferred boost level. Use the green LED light (installed in our test-car's boost gauge) to know when the system is activated. For centrifugal supercharger applications, Matt Snow recommends a 4-psi activation level for a 14-psi combination, and a 6-psi activation level for a 20-psi combination. For a turbocharged application with around 20 psi, set your application level for 15 psi, or closer to the peak power level than the supercharged application. (It is important to note that if you activate the system too early, the engine will misfire.) From the activation switch, run the wires to the pump and power source.
Here's the finished installation. Notice the insanely clean work that Tim performed for us with the Snow Performance methanol injection kit. The other thing you have to notice is that there isn't that much to notice. All one can see, without getting under the car, is the reservoir tank--sneaky.
Within two hours of completing our installation, Tim's 5.0 Mustang was strapped down on the Dynojet dyno at Big Shot Dyno--a nice facility staffed with some Mustang-friendly technicians. Tim's car baselined with peak numbers of 345.5 hp and 433 lb-ft at the wheels. This was with Tim's baseline tune of 10 degrees initial timing with Sunoco 94 octane in the tank. After several dyno pulls, with Tim slowly upping the timing until we stopped at 20 degrees initial, the car cranked out 373 hp and a whopping 510.9 lb-ft at the rollers. There is no way it is possible to run 14 psi on a stock 5.0 motor on pump gas without the use of a methanol injection kit. The more pulls we made, the more we were impressed with the Snow Performance methanol injection kit. The accompanying data table tells the whole story, but you will be able to test more boost and different methanol injection nozzles with your application.
| Tune (initial timing) | Power | Torque | Air/Fuel ratio | Dyno Test Notes | | Baseline (10 degrees) | 345.5 | 433 | 13.6:1 | A little bit lean with 30 psi of fuel |
| Activate Methanol Kit | 337 | 458 | 13.3:1 | Soft in middle of rpm range |
| Methanol (12 degrees) | 354.2 | 455.2 | 12.7:1 | Bump fuel to 32 psi; safer tune |
| Methanol (14 degrees) | 355 | 476 | 12.0:1 | Still rich |
| Methanol (16 degrees) | 361.5 | 469.9 | 12.2:1 | n/a |
| Methanol (16 degrees) | 361.5 | 487 | 12.7:1 | Backed fuel to 30 psi; still safe |
| Methanol (18 degrees) | 367 | 510.9 | 12.8:1 | Still safe |
| Methanol (20 degrees) | 373 | 508 | 12.9:1 | 36 degrees of total timing; iced
intake; Tim said, "I'm done! |