just been noticing these last couple of weeks that when the car has been driven hard ie bouncing off the limiter and sliding around it will missfire for a few seconds after and then clear up and continue like nothing happened :s apart from this the engine runs flawlessly so it is very odd! everything that matters: s14 sr20det fmic 14psi walbro 3" turbo back japspeed manifold hks mushroom no vvt rattle serviced about 1k miles ago not really sure what or where to check as nothing is broken!
mine started doing it on skyline, got new plugs on the way,I'm gna try that and then borrow my mates coil pack to see if that will make it better lol
They do go very rich with those mods on a standard ecu. So it would not surprise me if you are fouling the plugs up a bit. Or blowing the spark out. Try some new plugs
My s13 with rb in it does exactly same thing been wondering what it could be for a while was about to post seen this you fixed yours yet?
Fouling the plugs could be a possbility! It has some shit hot apexi ones in at the mo but god knows how long they had been in before i aquired it!
changed the plugs for ngk bkr7eix as recomended by DW etc and its still the same! could this be a fuelling/boost related issue? i am booking in for a dyno power run again soon so may show up fuelling problems then?
Ive heard of lifters pumping up under sustained high revs effectively holding a valve open. Could be this at a guess.
You could refurb your lifters. Pain in the balls to do that on a small chance it could be that though...
if there is no boost leaks check your plugs - if there fine then id put money on the coil packs are breaking down, common thing when putting power up on a 20 year old car. Also Change gear they dont like limmiters lol
