Hondata

90 crx, b18lsv, stock map, I l, snake eater performance 1000cc for break in. p28s300v3. Car wants to start, fires on first hit, then dies, looses injector pulse, check grounds, scoped ckp, cmp, tdc in dizzy td44u, I have spark no issue. looks like car will run fine if pulse was kept going. im out of ideas, ive changed scales, fuel, please someone help. thankyou

I would recommend that you try the ECU on a known working vehicle first to see if it will run with their calibration. If it does, then it sounds like you have some kind of wiring issue in the vehicle.

from your data, it shows the AF 10.2 look like the fuel is to mutch and it will kill your spark plug

the thing you need to check

did you set inj data?

your map sensor set as 4 bar?? or stock map

do you hear the fuel Pump priming?

from online ---> test ECU output

Regards

I had a similar issue and it ended up being my MAP sensor. Verify that with key on, car not running that your MAP is showing close to 0"/psi in SManager. Mine was showing 24" vacuum when it should have been showing 0" and it was doing exactly like you described. I replaced the sensor and everything ran as intended.