my ls/vtec putters when started and driving. accidently put regular in it when I need Premium. 11:1 compression

 

what do you mean "putters"?

 

ya your going to need a little more detail than that lol. Like timing is off? Is the exhuast note not consistent?

 

the exhaust note is consistent. Checked my plugs today and the #2 plug had corrosion on it from running lean I guess. I changed the plugs and the fuel filter out today and it still putters through all the gears and rpm's, like its not getting gas. Sounds like an STI, lol....but not good