1993 Honda Prelude dirt circle track car
H22
Stand alone harness
Dyno tuned and chipped ecu p28 I think

My last race I ran I didn't have my gearing choice right, so I was bouncing off of the Rev limiter quite a bit. On the last lap of the race, the car sounded like it lean out and then just shut off. Wouldn't start back.

After I got back to the pits, I put more fuel in the car and it started right up. I went back out for the next race and as soon as I mashed the throttle it did the same thing and started bucking and backfiring and all that but didn't shut off this time so I pulled it in. I figured my walbro 255 fuel pump had but the dust.

I bought another fuel pump and replaced it and I still have the same issues. The car will start up but sounds bad and pops and cracks when I give it throttle.

Things I have checked
- fuel pressure which was 50 psi
-made sure my 500cc injectors were clicking and not leaking
-no fuel constricting in hoses, no clogs, new fuel filter
-Compression check, all cylinders were good
-leak down test, all cylinders were good
-checked all sensors for correct operation all good
- spark plugs are fine
- swapped out distributors, nothing changed
-swapped out vtec solenoid, nothing changed.
-swapped out stock fuel pressure regulator, no change

I'm at a loss as what has happened. Car ran great and all of a sudden going into a corner it started cutting out and popping and cracking and hasn't been the same since.

Any help is appreciated. Thanks

 

Double check the TPS & main relay.