CDenny7217 said:
i'd like advice from somebody who knows what they are talking about because there is no point in regearing for 31's.
Essentially what the Jet chip is doing is changing the computers timing curve. The temperature tells the computer as to when the engine is at temp and with the O2 sensors provide a properly air/fuel ratio. At the same time, the Jet chip advances the spark. So with a hotter spark, slightly more fuel to air ratio, the result is then more HP.
Part of the requirement is to be able to ingest more air and to expel the same. This is one reason that Jet has 2 chips, one for unmodified and one for modified. The unmodified uses stock air and exhaust settings and provides a marginal HP and MPG gain. The modified provides large HP gain and maybe a MPG gain.
Hypertech uses a reprogramming chip to essentially reprogram your computer to take advantage of modified intake/exhaust vehicle. One chip will allow the use of regular fuel and the other will use high octane fuel.
Is it worth the money? Stage 1 will give you some moderate gains without modifications. Stage 2 will perform best with air and exhaust modifications. If you are looking at it for MPG gain, it is definitely NOT worth the investment because you may or may not even get a MPG gain. Depends on driving habits, age of engine, and mods to engine.
Can you feel the torque gain? If you are physically tuned to the performance of our vehicle, yes. You will feel the difference. Can you beat your buddy in the Viper off the line with it, don't count on it.
Is it going to compensate for going from 28" tires to 31" tires, No. It WILL help, but not as significantly as regearing will.
Yes I had one and I outgrew it. I now use the Hypertech programmer, as it will allow more flexibility for my particular mods.
Hope this answers your question.
