Manually Control Air/Fuel Intake Values.

Viper_Storm · #1 07-28-2005, 03:22 PM

is there away i can control how much fuel goes into my engine with like a flip of a switch? (or turn of a dial?) same for the air... i dont think it will be posible to do with the air, i just wanna be able to put out the power when i need it but for bumper to bumper city driving i think i would much rather have the gas millage... im just wondering if maybe someone has heard of this being done before? i wanna be able to change it on the fly so this way when im crusing i can set it for low and then when someone pulls up along side i turn the dial and bye bye... i donno any info would be great.

wrightz28 · #2 07-28-2005, 03:39 PM

variable/adjustable spark curve ignition timing would be about it.

That short of bottle feeding.

Viper_Storm · #3 07-28-2005, 03:42 PM

Quote:

Originally Posted by wrightz28

variable/adjustable spark curve ignition timing would be about it.

That short of bottle feeding.

is it possible to control it from the cab of the car?

wrightz28 · #4 07-28-2005, 03:46 PM

I know MSD makes a dist. that has the adj. "screws" on it, but I think they also make a control box to do the same?

Viper_Storm · #5 07-28-2005, 04:37 PM

Quote:

Originally Posted by wrightz28

I know MSD makes a dist. that has the adj. "screws" on it, but I think they also make a control box to do the same?

i donno, all i know is im open to all ideas...

89IROC&RS · #6 07-28-2005, 04:39 PM

well, you control the air that goes into your engine with the throttle, so thats already done for you. as far as your fuel curve, you can get the software to put on a laptop and custom burn your prom from the driver seat and have the same thing. but no, with a computer controlled car there is no way to turn a dial and change the fuel air curves, because its constantly changing with engine speed and load. the only thing i could think would be to somehow wire two PROM chips into the mount, have one programmed to be lean for best fuel economy, and the other rich for better performance, and have them on a toggle switch.

wrightz28 · #7 07-28-2005, 04:42 PM

89 wouldn't that be the same thing as cotrol box?

I'll have to look it up, but I could sear I saw one out there that when selected, worked like a "by-pass" if you will, over the stock ecm?

89IROC&RS · #8 07-28-2005, 04:48 PM

it might be out there, ive never seen it.

Viper_Storm · #9 07-28-2005, 05:03 PM

Quote:

Originally Posted by 89IROC&RS

well, you control the air that goes into your engine with the throttle, so thats already done for you. as far as your fuel curve, you can get the software to put on a laptop and custom burn your prom from the driver seat and have the same thing. but no, with a computer controlled car there is no way to turn a dial and change the fuel air curves, because its constantly changing with engine speed and load. the only thing i could think would be to somehow wire two PROM chips into the mount, have one programmed to be lean for best fuel economy, and the other rich for better performance, and have them on a toggle switch.

lol, first im gonna wait to see what everyone else posts and if this is still one of the better ideas im gonna work with this... and im guesing air auto adjusts?

wrightz28 · #10 07-28-2005, 05:28 PM

I't the other way around. They key is the ignition system, how fast and complete you can burn the air fuel, the more volume you can push, barring exhaust system restrictions, the wider open the throttle would be letting in more air to get to 14/7:1, in EFI land anyways. Carbs you could be a little less precise.

jesus058 · #11 07-28-2005, 05:48 PM

The technology is there, the CART and IRL cars have a system that allows the driver to choose the air/fuel mixture with the push of a button.

I guess it's all on the ECM programing.

Would be kool to know how the system works

Viper_Storm · #12 07-28-2005, 11:34 PM

btw, im asking for an ls* engine set up, not sure if you need to know that or not, but now you guys know

Rally Sport · #13 07-29-2005, 12:01 AM

Hm, I need to get a laptop.

supervisor1886 · #14 07-29-2005, 04:07 AM

I have seen this done on the rice cars that had custom turbo set ups put on them. They got perfomance computers and programmed with a laptop+special software. They make the system go richer.
But its still done by the computer not the driver.All you need is to have the car run more efficently and your imput isnt needed here.(good on gas at lower RPM). Check with perfomance shops-they can make your car run with less gas most of the time crusing and when needed kick anyones ass too.Its expensive and will be equall to the annual fuel savings!

wrightz28 · #15 07-29-2005, 10:04 AM

Quote:

Originally Posted by supervisor1886

I have seen this done on the rice cars that had custom turbo set ups put on them. They got perfomance computers and programmed with a laptop+special software. They make the system go richer.
But its still done by the computer not the driver.All you need is to have the car run more efficently and your imput isnt needed here.(good on gas at lower RPM). Check with perfomance shops-they can make your car run with less gas most of the time crusing and when needed kick anyones ass too.Its expensive and will be equall to the annual fuel savings!

I'd be nervous of a lean knock as result shoudl something get out of whack.

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