2G 2g (evo ecu) big injectors help

[elguareali]

I have a 2G GSX (evo 8 ecu) on speed density, mods are exhaust, FP green turbo, stock cams, stock motor, Black top CAS mod.

Car works greats, but stock injectors arent big enough for the FP Green, it goes lean at 18lbs. So I have some FIC 1250 blue max injectors.

Installed the injectors, made the tuning changes, size, latency (from merlins guide and evom supermerge) etc, and the car starts but dies instantly, tried everything, more changes in latency and size, and nothing. If I start and go WOT the car accelerates but failing, misfiring, etc.

Tried another injectors (PTE 1200) from a friends evo, used the same size and latency working on his car, and same thing in my car, doesnt idles doesnt accelerates. nothing, wont stay on. Tried some PTE 680cc same thing.

It seems like the ecu cannot control the bigger injectors, or they are firing out of time, not in sync with the cars timing.

Any idea on whats wrong? what could I try?

Here is a video showing what it does at WOT, falmes at the back, wideband lean, and doesnt accelerates.

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Thanks for your help.

 

[ATF 2GTalon]

Are you using ECUflash? It still sounds like your injector size and deadtimes are not set right. If it is lean at idle, keep adding deadtime or decreasing injector size. Don't worry about fuel trims yet. Just try to smoothen out the idle for now.

Not positive on this, but it also sounds like one of your cylinders is not firing. Could be injector or the cylinder is flooded and that spark plug is not firing. While idling unplug the electrical connector at the injector one at a time and see if it idles the same or changes. And the same can be done with the spark plug connector.

But I would try the injector scaling and deadtimes first and see if it gets better.

 

[elguareali]

Yes I am using ecuflash.

Will try decreasing injector size, Will post the results

Thanks