Hiccups (vid + dyno graph)

[flatrate]

enough chit chat, lets start gapping plugs down and checking what we've discussed and narrow this sucker down...

[Neejay]

Simple test can be just turn down the boost and see if the problem goes away. Doing so will reduce cylinder pressure and if the spark was being blown out, bringing the pressure down will make it run like a champ again. Usually stumbles from spark blowout happen at peak torque which is where yours seems to be having these hiccups. Reduce plug gap and see if it works better. If it does (even for a short while), then it's narrowed down to a spark problem. Now you got to see if your coils are on their way out or if it's just a weak set.

This is what happened. Before I had 1 step hotter plugs + .030 gap if I'm not mistaken. I then went to 1 step colder and a .028mm gap and all was well for a while. Now it's back to doing what it was prior to swapping the plugs. How would I test the coils, because unplugging them when the car is still on won't do any good since the car runs fun @ idle and partial throttle.

[Neejay]

enough chit chat, lets start gapping plugs down and checking what we've discussed and narrow this sucker down...

Yep! Will do. It's gonna be raining here for the next few days and I'll be attempting to move into my house, so bear with me guys. (apartments currently)

[gt240r]

back from the dead.......BUT I am having the exact same problem and need help.

[robbie2883]

looks like a fueling issue to me... also you can see the lean spikes. could be your tune or your fuel pressure/pump. put a fp gauge on it and see how your fuel pressure looks.

a spark blowout is more of a stuttering and won't really clear up as you run more rpm/load.

^^^this. if it was a spark issue it would have gotten worse as the rpm increase as does the duty cycle of the coils. it acts like a lean speak and you deff have some lean spikes when it's happening so i would lean towards fuel as well.