I am not going any higher than this. I changed to NGK #6 spark plugs to prevent detonation and so far so good. I am running 3 to 4 bar rich on the A/F meter. I have had no bad side affects of running with this setup thus far, but I feel that I might be maxing out the fuel supply so I am not running it long with my settings. Soon I will be getting the 555 injectors and intercoolers. So to answer your question, you will be fine. Just dont go crazy on the boost. You will feel the difference with just the turbos, but you will get the itch to turn the boost up. Sport 500's can really spool hard, just keep it down till you get injectors and such. Just my .02.