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Originally Posted by glhs837
This thread will be a discussion of using water injection to stand in for the "+100" octane required by Mopar Performances Stage 2 and 3R Turbo upgrade kits with Turob Toys for the SRT-4.
The kits have a switch panel that includes a HOM button. This button, as described, advance spark timing and adjust fuel to take advantage of higher octane fuel. With Stage 2, this feature is good for a +20whp power increase.
While this kind of "tuning for race gas" is common in the aftermarket, the main benefit here is that this mode comes with the full suite of protections afforded by using the stock computer system.
Meaning timing pulls and added fuel for cooling if intake temps rise, and also if kcock is detected. One of the main boogeymen of the anti-injection crowd is that if the system fails, your car can suffer. With the stock system on watch, this isn't an issue. Ow, more later, my fingers hurt  |
It is interesting to know that SRT has this HOM option from factory that will allow owners to increase power without seeking further third party bolt-ons expensive dyno hours.
Aftermarket tuning is time comsuming becuase vital management control is not easily available form the manufacturers. It is a really value pack from Chrysler, not that the 20 horses is $1500 worth but the possibilities of futher possibilities for more power increase. The best thing that comes with the package is the safety aspect - the management can detect knock and prevent any possibility of dmage to the engine.
In your quest for internal WI using the HOM button, I agree the 2d is a very simple replacement for race gas. There is also the possibility of tuning up the boost further to use up the excess fuel intended for cooling and now for additional power.
If you are going to that direction, please post the results.