BMW E36 M3 Euro S50B3 Ecu's with Alpha-N and Vanos chip setups. This came with an E30 Touring I bought that had a Euro S50 swap. It had a mid range hesitation, which was a combination of a cam sensor and the Vanos, but the builder tried this setup to make sure it wasn't the MAF or ECU or something related to the injection. Was installed, run on the dyno and removed. Cost of the chips in the two ECUs is about $700, the ECUs cost about $800 combined.
I'm asking $500 for everything. Happy to ship.