Car is falling on its face at full boost, possible misfire
 

Recently I have noticed my car acting up when I try to drive it at full boost, not all the time but usually when I give it enough gas to reach full boost aroung 3k it just kinda stutters and won't accelerate worth a crap, and today I actually got what seemed to be a misfire... last time I was having misfire problems, I changed the plugs and it was fine

So I figured I'd change them again eventhough there is only 6k miles on them but I guess it wouldn't hurt since they are the copper cored bkr7e's... well I changed the out with new bkr7e's, and I noticed this time the tips of the old plugs were a grey color, usually in the past my old plugs have been a dark red/rust color, hmm? Well I changed them and the car still does it,it didn't fix anything...

I'm thinking it might be these $hitty NGK bkr7e plugs, eversince I switched to them from factory I have had problems... what do you think??

RE: Car is falling on its face at full boost, possible misfire
 

Are they correctly gapped?
https://i93.photobucket.com/albums/l...pfiringend.gif

RE: Car is falling on its face at full boost, possible misfire
 

I have been gapping them to .028 which is what I've read to gap to...

RE: Car is falling on its face at full boost, possible misfire
 

or coilpacks?... i dont know though because when i blew two of mine the car barely ran..

RE: Car is falling on its face at full boost, possible misfire
 

They should be grey, i think you must of put in some additives to make them turn the redish color. Your gap is correct. You either are having coilpack(s) problems or possibly a maf problem. Try unplugging the maf for a spin.

RE: Car is falling on its face at full boost, possible misfire
 

thanks cincy, I'll give that a go

RE: Car is falling on its face at full boost, possible misfire
 

how would you know if a coil pack is going?

RE: Car is falling on its face at full boost, possible misfire
 

the car will be sluggish, not as responsive... its almost like driving without a cylinder

RE: Car is falling on its face at full boost, possible misfire
 

after all the crappy driving, you get is scanned and it says missfire in cyl X and when you move it to cyl Y and the code then moves to cyl Y, you have a bad coilpack.

RE: Car is falling on its face at full boost, possible misfire
 

Stock intake piping? Could be the turbo collapsing the soft parts of the intake.