Water/Meth injection

Kyle@STILLEN

I hate 91 octane with a passion! It's amazing how crappy it really is.

Question for those people in Florida and other parts of the country that get 93...What is the cost of the 93 octane in your areas?

Does anyone know why CA is limited to 91?

We have found that the air to water intercooler is EXTREMELY efficient. As you can imagine dyno pulls put a lot of heat into the system and one of the quickest and simplest examples of an efficient intercooler is how long it takes for the car to cool back down after a hard pull. For example, we have been doing a lot of supercharger installs and custom tuning with the new Camaro's. Those cars are TERRIBLE on heat soak. We will do a pull, then have time to actually get out of the car, walk to the computer, get back in the car, keep on waiting...It's insane before the temperature actually comes back down. With our 370Z and G37 we can do pull after pull after pull with very little down time between runs.

Also, during our development we did insert temperature probes post blower and post intercooler (in some of the prototype/testing photos you will see the yellow wires.) We saw decreases in temperature of well over 100 degrees and at idle the IAT's were within a couple degrees of ambient if I remember correctly.

WarmAndSCSI

We have 91 exclusively in Utah because of our elevation. Being 4500+ ft up, we can get away with it since all engines up here have greater detonation resistance with the lower air density.

For California, I think it has something to do with a combination of the oil companies and CARB regulations. Apparently it's pretty difficult to make a 93 octane gasoline that meets all of your emissions requirements (including oxygenation). Only one company - Unocal - had a process to produce a 92 octane fuel for California's most recent requirements. Unocal is apparently defunct now, so nobody is licensing that process any more. Cost is the major factor, however. The price of 93 would be just that much more on top of your already outrageous gas prices.

This is just paraphrased on what I knew before and what I just read... could just be conjecture on somebody's behalf, but it sounds logical.

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