My 04 has been running fine and performs great until 2nd nitrous pass. Currently using the zex kit on 100 shot with a retard timing of -2 degrees. I have a misfire on cylinder 3, and thought I burnt up the spark plugs so I bought the ngk 1 degree colder plugs and same issue... No oil in cylinder 3 and if you unplug the coil pack you can definitely hear the miss... It's got power loss and hesitates at wot no matter what rpm you start out. Things I have done: cleaned maf, changed plugs all 6, checked for leaks around intake, and made sure tps was reading properly. Any help would be greatly appreciated.. I don't want to hear the compression is bad as that would be the worst case scenario. Current mods are intake, full exhaust, nitrous.

 

Do a compression check, make sure you didn't fry your rings.

 

I'm no nitrous guru, but I have read that you need to richen your WOT AFR tables at least .5 or you will run lean once nitrous is engaged and spraying. I see you reduced timing but did you fix the fuel portion of the tune?

 

Burnt exhaust valve is one possibility too.

 

Were you running 1 step colder plugs before this happened or stock plugs? Do you have an afr gauge? What was the afrs when you were spraying. What is your activation window?

 

I'm going to assume this was a dry shot? Not a wet?

 

Why haven't you checked compression. Right after inspecting the plug this is the second thing you should have done!!!

 

Maybe he did check it after I sugested it and found he wrecked his motor, now he's in a corner crying.

 

RIP another VQ lol

 

No engine is fine... sorry I've been dealing with family issues but I did get it fixed the coil was bad on 3 it had a slight hole in the rubber portion of it and causing to fire against the spark plug tube. I need to get it tuned on spray I don' know the afrs. And this is a wet shot.

 

https://www.facebook.com/jason.headley.12/videos/1742827155747741/
this is a link to the video of me spraying it against a 98 gt on a dry 125 shot with 28" slicks got him by 3 cars at the end. I'm on 275 radials

 

https://www.facebook.com/jason.headley.12/videos/1742827155747741/