Thread: stock ecu...no added fuel???
05-24-2010, 11:32 PM #1
- Join Date
- Jul 2009
stock ecu...no added fuel???
why cant the stock ecu add fuel when the map sensor (assuming 4 tec has them) senses more boost????
ex: having a bigger charger????
is it just not programed with a fuel map past stock boost levels or what?
i was just thinking
05-24-2010, 11:47 PM #2
The ECU only controls fuel up to about 10 psi and then commands 100% duty cycle.
The Riva ECU is good for i think 13- 14 PSI before it commands 100% duty cycle and at its max fueling for that amount of boost.
The only way to add more fuel from this point is to add a Rising rate Regulator, Bigger injectors and a Rude Fuel Controller.
05-25-2010, 02:17 AM #3
It can and will add fuel upto a point as Rick says but you cant expect the stock ECU to be able to handle 15psi of boost. You can get away with going up 1 size in injectors before your idle becomes an issue.
05-26-2010, 06:25 AM #4
- Join Date
- Mar 2010
I haven't realy looking into the software of the stock ecu , but we can easily calculate up to what boost level the stock fuelling system can handle , to max out the stock injectors you might need to modify the fuel maps inside the ecu
05-26-2010, 09:03 AM #5
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