Service Engine Soon light 99 Cobra
I have a 99 Cobra Roush stage 2 which I added theVortech supercharger kit last May. A couple weeks ago I had it dyno tuned because of excessive pinging. It now runs great but the Service Engine Soon light came on. A friend used a scanner and determined the code was 0605 something to do with Internal ROM error in the car's computer. I took it to the dealer who immediately refused to touch it do to the modifications.
Any ideas how to fix it? Like I said, the car is running the best ever but the light bugs me.