Well i was driving my Z to school today on the highway, it has been in storage for most of the past few months but i drive it when i went home from school.

Im getting a high rpm miss. I used to get it once in a while but now, pretty much every time im in the high rpms it will miss like crazy.

Basically i was on the highway and decided to make up some time on an empty stretch of highway so i floored it and when it was in the high 90mph it started missing like crazy and fell on it's face, simply wouldnt accelerate anymore. Took me like 5 secs to get any acceleration past that point. I slowed down and it did the same thing.

The plugs are all ngk tr-55s, i changed em last year and they are all gapped, the wires are all replaced and they are good.

I will log it with hptuners to see if i can detect any missing through that.

do you think this is opti or maybe something else?

Ill run some injector cleaner as maybe i ggot a bad injector but im not sure.

How can i absolutely make sure it is an opti? I don't have the time to blindly replace parts.