Hellen 121 vag
rusEFI Hellen 121 VAG ECU development board
That's a development board which is known to start a 2000 1.8T Audi TT and that's all what's known about it's functionality
We are still trying to figure out if this board would run 5, 6 or 8 cylinder VAG engines with a 121 pin ECU
To the best of my knowledge, this board runs any 121 pin VAG harness engine but so far only tested on 4 cylinder.
WBO software only supports 4.9 sensors at the moment, not the 4.2 native to those older harnesses
OFF ROAD USE NOTICE: items sold through rusEFI LLC including tuning products may be designed for off-road/race use only, and are not applicable for vehicles in states that require pollution controlled vehicles. California (CARB) & other states prohibit the sale or use of some aftermarket parts, including those that tamper with, modify or defeat emissions systems in any 1966 and newer vehicles. rusEFI LLC prohibits the use of these products on emission controlled vehicles. These parts are sold for OFF ROAD, RACE-ONLY, ground-vehicle use only in a controlled environment.
rusEFI LLC does not implicitly or explicitly confirm the legality of using any products it sells on public roads. Customers are solely responsible for ensuring all products purchased are used in a legal manner.