Thanks for the response Mike. But I'm a little confused now. I thought that 87 octane had more energy but was easier to ignite while higher octane gases where more difficult to ignite?? That's why if you advance your timing or are having detonation problems, using 89 or 92 octane will usually help the problem.

 

I wanted to know if I could run water injection with 87 octane gas vs. using 92+ octane?

From my reading, water injection is supposed to eliminate detonation by cooling off the intake temperatures when you advance the timing or are using a turbo or supercharged system.

It seems like this should work with a SuperChip as well. Has anyone tried this?

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2000 F-150 4.6L

 

Hi timteeee,

No, that is not going to work with the Superchip, you still cannot run anywhere near as much spark advance. There is no substitute for octane and BTU's, neither of which can water injection provide.

Water injection was very popular in the 70's and even in the 80's to a degree, as it was a very viable solution for certain problems during those periods of time, prior to fuel injection and computer controls.

But now that we can control all of these parameters so much more precisely, water injection is pretty much a thing of the past in these newer fuel-injected vehicles. That's not to say it doesn't still have a place in non-injected vehicles.

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Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com
Performance Products F150Online Superchip ordering system: F150Online Superchip Ordering System

 

Well, not exactly, but kinda/sorta, let me explain...

Lower octane gasolines do not have "more energy", they are simply more volatile, having quicker burn rates. Going to higher octanes generally gets you a slower, more complete burn if you program for it correctly.

Premium gasoline has increased anti-knock properties as compared to regular, so we can use more spark advance without causing detonation. So if you have as spark knock problem running lower octane, you cvan generlaly help that by going to a higher octane gas, due to it's increased anti-knock properties. When you can run more spark advance, you generally get more power and better gas mileage as well, within reason.

I hope that helps a bit,

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com
Performance Products F150Online Superchip ordering system: F150Online Superchip Ordering System

 

Thanks Mike, makes sense now.