it ran fine yesterday. i shut it down and went to start it today and it ran like this....

so far i have:
calibrated the tps
swapped coil packs
verified map sensor is working properly
verified the plug wires werent crossed
reset the power fc
verified injectors are firing
deflooded a million times just to be sure

i have run out of ideas.... anyone have something in mind?

 

So digging through the internet and fsm for troubleshooting, it keeps bringing up the iat sensor. Mine is not hooked up since i have not yet wired the new plug into the harness. It appears the iat sensor carries a lot of weight. Majority of the information i find has to do with the stock ecu. A couple things mention it and the power fc but not so much. The thing that confuses me the most is that it ran great a day ago. Smooth idle and everything. Nothing changed but the date and now its acting up. I will plug in the stock iat and see if it helps.

 

Plugged in the iat and getting the same result........

 

When mine sounded like a Subaru I had a chipped seal.

Fouled plugs maybe it's hard to tell what is sounds like from the video.

 

Just fixed it. #2 leading plug wire was bad. All is well now.

 

That makes complete sense. From the video it sounded as if the car was on one rotor.

Glad you got it sorted out!

 

Yes, well it started happen again. Troubleshot my *** off for 8 hours. Did everything you can imagine. I cleaned the spark plugs with a soft wire wheel until they were shiny as can be. Didnt work. It wasnt until i took brake cleaner to them that the issue was sorted. It fired right up. So for anyone that has troubleshot everything and is out of ideas, check the plug wires and clean your spark plugs with brake cleaner.

 

This happened to me too the other day while I was deflooding my motor. I was cleaning plugs and swapping them out and had the 1 rotor problem. I cleaned mine with lacquer thinner and it did the trick.