![]() ![]() DYNO-BOOST tricks the ECU thinking the intake air much more cooler, then the ECU will send more fuel for a richer mix." ![]() "simply wires inline with the IAT (Intake Air Temperature) also referred to as MAF (Mass Air Flow), MAP sensor. I'd be more concerned about the claims"Update : I found this programmer : Just take your time and make small changes and do some research to know what to play with and what to leave alone. Tuner software will let you change anything at any time. It does have some preset limits as to what I can do, but I don't have to send out my PCM if I changes gear ratio or tires. The tuner lets me change things over the course of owning it. Not all our trucks have the option to use a hand held tuner. I bought a hand held tuner, Superchips, for my current 5.3 Envoy. My son is getting his Mustang dyno tuned soon. Of course an mail order tuner can only do so much without having the vehicle there to see or measure the changes. ![]() Sent it out, cost me $80 and it made a real improvement in the feel. I had a mail order tune done on a 4.3 Jimmy I had. Other improvements are quicker firmer shifts, adjusting the shift points, redline, max MPH, and lots more. It doesn't add any horsepower, it just makes it available sooner. The factory builds in a slow response to avoid throwing everyone back in their seat when the driver hits the gas, to reduce shock to the drivetrain, to reduce the chance of the tires breaking loose if you jump on the throttle. If you switched to low profile tires with the correct air pressure, and had a quick steering rack, that is what it would feel like, only with the gas pedal. Well, if you had big fat tires on your truck, that were low on air, and had slow steering, that would be what your current throttle response is like, only with the steering wheel, not the gas pedal. ![]()
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