Originally Posted by newbee
What are the benefits?
How does it compare to the Stealth from Herrod?
I don't know much about any of these chips/program modifiers.....
I'm no expert, but I'll tell what I know which is minimal.
The Stealth is a programmable unit that connects in series with the original PCM and requires fine-tuning on a dyno.
Through it you can change the engines; fuel/air ratio, ignition timing and possibly valve timing.
This is excellent to get the absolute last hp out of the engine, it is also great if the engine is modified, such as; exhaust, air intake, piston/compression ratio, turbo boost, etc. All these modification require the re-calibration of the PCM to suit the engine.
The Powerchip is a pre-programmed unit that replaces a module inside the PCM.
Each different vehicle type & model has to be R & D’d, they get the vehicle & experiment with adjustments that usually include fuel ratio, ignition timing & possibly electronic valve timing, until the best & safest possible enhancements are found, and then it is mass-produced. It can not be re-calibrated like the Stealth.
The vehicle manufacturer designs their system with a safety margin to guarantee longevity in the event; lack of maintenance, a fool driver, or unforeseen circumstances happen, and to allow for our poor quality standard fuels.
The safety features are usually; ignition timing that will not reach the possible max or reaches it slowly, slightly rich fuel supply to guard against extreme heat, W.O.T full load driving, etc.
Companies like Powerchip take out all these variables and ring the most from the system leaving very little in reserve, for most people that does not matter since we use high-octane fuel & keep the vehicle regularly maintained.
For the Territory, I have been looking at something like a Powerchip.
If I had a GT or some other type of sport sedan then I would look at Stealth
If anyone has a better explanation or needs to correct me, please do so.
Because as I said, I am no expert on this subject.