JET Mass Air Flow Sensors will work with most cold air intake systems. However, they aren’t calibrated for wide open cold air intake systems.
Yes. All JET Performance Chips and most Performance Modules are 50 state emissions legal. They do not change the emissions at all from the stock tuning chip for any Federal or local emissions test. C.A.R.B. (California Air Resources Board) has issued Executive Order numbers D-234 through D-234-6 covering all JET Performance Power Chips, making JET Performance chips the most complete line of high-performance chips that can legally be sold, installed, and driven in the state of California. Because of C.A.R.B.’s very rigid rules concerning exhaust emissions, the Environmental Protection Agency ( E.P.A. ) accepts C.A.R.B. approval as evidence that an aftermarket part is clean and suitable for use in all other 49 states.
At JET Performance, JET carefully dyno and track test every product JET sell…in fact, it is these tests that tell us when JET have the best possible tuning. Of course, the power gains are different for each engine family and vehicle weight. However, power gains range from about 10 Horsepower to over 50 H.P. on supercharged or turbocharged engines, resulting in a 2 to 7 car length improvements in the quarter mile. Zero to 60 M.P.H. improvements are typically about 1/2 second. See the Dyno Sheets and/or Horsepower Gains sections for information on your particular vehicle.
Stage 1-For stock or mildly modified vehicles. Fuel and timing curves modified for optimal performance and mileage using midgrade fuel (89 octane or better recommended). Good for daily driving, towing and street performance. Improves horsepower, torque, overall acceleration and throttle response. No other modifications to vehicle are required, but the Stage 1 programming will work with most aftermarket upgrades without using premium fuel.
Stage 2-Designed for the performance enthusiast, the Stage 2 features more aggressive programming to make the most horsepower and torque available. The Stage 2 programming requires use of 91 octane fuel to optimize the advanced timing curves, a 180 degree thermostat to provide a denser air/fuel mixture and a free flow exhaust system to reduce back-pressure. The stage 2 will also enhance the performance of aftermarket intake systems, mass air sensors, TBI spacers, etc.
The factory programming is designed for the average driver and is designed to take a wide variety of operating conditions and driving styles into consideration. Consequently, stock calibrations aren’t set to provide maximum power because they have to accommodate drivers who may use lower quality gasoline and poorly maintain their vehicles. For a real high performance person who carefully maintains their vehicle midgrade or premium is all they ever use. JET Performance programming optimizes the spark and fuel curves over the entire RPM band, from just off idle right up to the redline for maximum power and performance from a well maintained vehicle using better than average fuel.
No. Best power is always made when air/fuel ratio and the spark tuning has been optimized for maximum power, meaning maximum “push” on the piston during each power stroke. Damage occurs if the air/fuel mixture is too lean, meaning that there is not enough fuel for the amount of air in the cylinder. This results in excess super heated air, which can cause burning of valves and pistons and will also induce detonation (which can break pistons, etc.) Relative to spark timing, too much “advance” will cause detonation, which reduces power and can also damage parts exactly as a lean mixture does. When you finish installing JET Performance on your vehicle, your engine will run at maximum efficiency yet safely distanced from possible damage due to leanness or excessive spark advance.
Custom Programs are available if you have installed aftermarket intake manifolds, camshafts, large mass air-flow sensors, nitrous oxide systems, or any type of supercharger or turbo system. You absolutely need JET Performance Custom Programs with these modifications for both tremendous power gains over stock tuning as well as to eliminate the probability of lean air/fuel ratios and excessive spark advance which are death to modified engines. You do not need a Custom Program for engines that are stock or mildly modified. For example, high-flow air filters, cold air intake systems, cat back systems and TBI spacers work perfectly with JET Stage 1 or Stage 2 Power Tuning. If you suspect that your modifications would benefit from custom JET Performance tuning.
JET Performance tuning replaces stock computer tuning inside the vehicle computer to give maximum power and torque. The tuning can be delivered in the form of a chip that replaces the stock computer chip, a chip that piggy-backs the stock computer chip, a chip that plugs into the back of the stock computer, or a module that intercepts and modifies the signals from the stock computer with JET Performance Power Tuning. The type of computer in your vehicle dictates the type of device needed. The tuning information is stored in the computer chip which controls all of the engine’s characteristics like air/fuel ratio, spark advance, shift firmness, shift points, top speed, rev limit, and axle ratio. Sensors monitor many engine and transmission parameters like RPM, manifold air pressure, mass air flow, coolant temperature, intake air temperature and many more. These sensors send this information to the computer. The computer uses this information delivered from the sensors along with the information stored on the chip to deliver the optimum air/fuel ratio, spark timing, shift firmness, etc. for this set of operating conditions at that instant in time. JET Performance can tune a vehicle for the conditions by using a dynamometer to measure horsepower output while altering the information stored on the chip. This is how JET Performance maximizes your vehicle’s power output!
JET Performance Power Tuning does not alter your vehicles calibrations in any way that would hurt fuel economy. Fuel economy will remain virtually the same or may even improve (depending upon specific driving patterns) unless the vehicle is driven in a spirited manner (lead foot). For trucks that tow, JET Performance’s Power Tuning is generally closer to the better fuel economy than the stock tuning. So in addition to power gains, a vehicle that tows with JET Performance installed will often exhibit better mileage than one with stock tuning.
JET Performance Programmers include the option to remove the speed limiter and in most cases modify the rev limiter, but JET modules will not remove the limiters. Speed limiters are based on the speed rating of the OEM tires and changing these limits are done solely at your own risk! In some cases the limiters can be removed with custom programming, contact JET with your vehicle specifications to be sure.