My 01 miata have a supercharge and my problem is while coming close to a stop if you suddenly switch from gear to neutral with about 2.5k+ RPM the car will stalls. But if you let it sit in gear and let some pressure out(Blow off valve) or just let it die down to 2, the car will idle perfectly. Any have experience this before with or without a supercharge/turbo? It's even worst after installing the inter-cooler. Before the inter-cooler, the car wouldn't die unless the RPM was maybe around 4k+. One thing I would add is that I haven't install the fuel management yet and it's currently running lean.