hey whats up guys I have a turbo gsr street tuned on 91 and I put 87 on accident and it was running fine for the first 3 days I don't drive it much but this weekend I took it out and its acting kind of funny its not giving me much power and its not revving as far as before when I saw there wasn't much power I tried to rev up high to see what it does and it cuts out until I put in the next gear thanks in advance -jonathan

 

Check spark plugs.......