stand alone systems...???

[marcuslogsdon]

ok... what is a stand alone fuel system and how does it work? As many questions and or comments are appreciated. I want to get educated!!!! i guess im wondering if it takes the place of the stock ecu and how it effects performance and tuning!!!

[darksecret]

Basically it controls the air and fuel ratio of your vehicle, but it's fully custom so if you add a turbo later you can re-tune for it. They are a lot lower in price now but still expensive, but it's a small price to control what goes on in your motor. Some are better than others by allowing more points to control, but they all work pretty much the same.

[Pineapple]

It replace the ECU on fuel managment. It allow use of different air intake sensor (MAP, MAF), adjustable fuel map, ignition map. Sometime stock ECU is still needed for tranny, AC and other function.
Stanalone should be programmable which mean you can adjust its setting as often as you needed.

[marcuslogsdon]

ok good tips how about a piggyback got anything on that?

[EggBeater59]

piggybacks are cheaper- check out the greddy emanage, and apexi safc2. the second seems to be more popular, but i hear better things about the first.

[polo708]

unless you are going all out performance, a piggyback controller is what you want... a standalone will cost you an arm and a leg. If you dont have a ton of mods to take full advantage of a standalone then you are wasting yoru money.

[Dr Tweak]

A piggyback still uses the stock ECU to control everything, but it modifies the amount of fuel delivered by changing the airflow signal to the ECU.

[marcuslogsdon]

thanks guys by the way dr tweak... how is your 4afe turbo project coming along?