MAFS wouldn't cause the car to die out...at least not from my past 7yrs experience.
Check and make sure that you didn't cross the feed and return lines upon installation.
Although it doesn't sound likely since you said that you have to press the gas peddle to keep the car running, (slightly longer before it dies?).
Either way, I would pull the fuel feed line and see if enough gas is getting to the rail, if any at all.
Did you delete emission sh¡t?
Did you swap chassis or just engines?
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I like my bikes how I like my b¡tches...naked!
2014 Triumph Street Triple
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