I just put in SVO 42's and thought everything was good. I real scaled them and started re-tuning my car since I had my heads done. When I start my car it blows alot of black smoke sometimes and when idling somtimes you can see a little black smoke come out, you can smell it and tell its from fuel. The WB is showing 14.6 a/f at idle at 800rpms with my 237/242 .603/.609 cam. When driving my car is drinking gas compared to before, I was at 30-31mpg and now its getting 24-26mpg. The only thing I changed were the injectors and had my heads worked. Anyone else have this problem?