Help trouble shoot my problem.

Tombonombona

I know its not the wheels since I had them on before the supercharger went on and they never caused any problems. Only code they through was that the computer couldn't get a pressure reading off them, my VDC still worked...... I tried reflashing the ecu from a gtm map to a safe J Tran map and still nothing, but I suppose I can try the stock map.
As for spark plugs, they have 3500 miles on them, just like the rest of the car.
Is the hex on the plug 14mm or is it the normal 5/8. Becuase worst case, is I have a friend with a really old snap on spark plug socket ( better metals back then, thinner walls ) and if that doesn't work I can always buy a 5/8' deep impact and turn it down on a lathe.
I can try, but UpRev never even picked up the code, and car was fine all of last summer when the kit was on, it was only last week that things seem to have gone for ****. But like I said, I can reflash to a stock map no problem, that only takes a couple minutes. Just want to check a few things like crank sensor ( if I can find it ). Because before I reflashed with the J Tran map when it would try to fire it sounded like the timing was so far off that it was almost backfiring into the intake.

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Tom B.
Exotic Speed R2 Titan Catback-GTM Stage 2 Supercharger 522 whp on a mustang dyno
2004 Subaru STi *SOLD* *WRITTEN OFF*