Ahhhh.... completed my final mod which is the JB4 with the Denso gapped plugs and got a check engine light within 24 hours. Code is reading 0113 and the car is was very jerky and now barely will start and cuts off after a few minutes. I had a professional instalation since I know nothing about cars. Any insight would be very helpful. Sent the car back to the shop afterhours for now and may end up putting car back to stock :/