I'm guessing a P030X code. Octane boost is junk. Top tank off with 93 and you will get the same results.

The mechanic I took it too said the #2 spark plug is misfiring. I am hoping it is just the octance. He is checking my car out free of charge, SO I am hoping it is just the octance , I added the octane booster and topped off with 91 octane so I am hoping the SES light goes out soon.

See, that'* a P0302 code. Check over that wire, might have been loose. Check it'* routing to make sure it'* not grounding out. Do you have new plug wires or are these still the original wires.

the code it is pulling is:

catalactic efficiency low bank 1
availability to store oxygen
catalactic converter is defective
possibility due to #2, 3 and 4
engine misfiring or runnining condition
large vacuum leak
engine oil leakage into exhaust valve guide
piston rings
cyclinder misfire cylinder #2
ignition system failure spaek plugs ignition wires coil
injector fault
high or low fuel pressure.

Those are all the codes it pulled from autozone.

I hope this is nothing major guys.;.;
help me out

Start by checking for vacuum leaks. Those tend to throw a ton of codes. I've seen transmission codes from a vacuum leak. Spray carb cleaner on all the vacuum lines, around the injectors, around the gasket on the LIM, around both EGR tubs, under the supercharger snout, and around any EVAP lines. Fix what you find. A badly misfiring cylinder will also pump unburned gas in to the cat causing codes.

Seems like my #2 spark plug and wire are misfiring. So the cheapeast I could find for a tune up was 150 plus parts...does that sound reasonble?

Let me know

WHAT are you getting that costs $150!? For that cost, I hope the sparkplugs install themselves.

New set of plugs, autolites, less the $10, new set of wires, I believe about $40, half hour of your time, done. The front set of plugs are easy, the rear set will take a bit more effort. You need a 3/8 drive socket wrench, a short extension, and a spark plug socket, that'* it.

he said he would do it today, just need to pay for parts. 125 plus some electronic equipement and he would be good to go...so it shuold be too bad. I am also getting a tint job for 125

yes I am getting new set of sparks and plug wires and a new air filter...he is going to do the complete tune up...the other place wanted to charge me 350 for the tune up...this mobile mechanic ASE certified will do it for 150 plus parts..so I think that is a good deal.