Can you make TBI squirt fuel like carb

[joegreen]

Hello. I read somewhere on some other forum (i do not remember where ) that someone made their tbi squirt fuel like a carb accelerator pump before starting. This sounds very cool and i would like to know if it is possible to make a tbi injector do a quick pulse by putting your foot to the floor and back before starting. I have chip burning equipment if this is possible. My truck starts pretty fast but in the morning it turns over like 5 times. When i had my quadrajet on it it used to practically start before you finished turning the key. I miss that

[buddrow]

You can try just increasing the cranking fuel to see if that helps. I havent seen anything about the squirt idea on a TBI. Sounds like the old TPI cold start injector. Not sure if you could hack that into the ecm/pcm code but could be done externally with minimal hardware.

Buddrow

[steveo]

i know exactly what you mean, with a carb you give 'er pump shot, and by the time you turn the key, that shot of fuel has vaporized and is hanging around in your manifold, so it starts more quickly.

would be nice to do it in code but it'd be a pain, since it doesn't have any reference pulses yet. there's usually a control loop for 'not running yet' in ecm code, if you could insert a 'if tps > 90%, pulse injectors a bunch' kinda routine, and just make sure you dont flood it.

personally i just dont care, long cranking times on tbi engines is kinda normal.

[joegreen]

Its more of a neat thing i miss having. It would be cool to have but would it mess with clear flood mode?

[steveo]

clear flood should never be needed on a healthy engine anyway

whether it messed with it or not depends on how you program it

[joegreen]

so is it possible to set a parameter that when certain tps value the injectors squirt?