The core of the BEGI IC is a very efficient core, but I'm beginning to wonder about how much surface area of the BEGI IC is exposed to air? Most if it (at least on my car) is behind the bumper. How much air is accually getting on it. I wasn't so worried about it at low boost, but now that I want to push more, I think this is becomming an issue as shown my my J&S. Tonight while tuning, I was adding timing retard, and the J&S wouldn't light up, but then it would. I'm really wanting to get my hands on that FMIC kit from Mental Addiction Motorsports now to get more air to the IC.