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specboxCO · 10-10-2018, 08:17 AM

I used a 40v A8 AUX engine in mine. Biggest decision between the 40v and 32v engine is whether to go drive by wire or cable throttle. There is a slight mod to the accelerator pedal wiring in the Boxster needed if you run DBW.

I used the stock Audi 7.1.1 ECU from the A8 adapted to the Boxster harness. ECU had to be hacked to remove the immobilizer and then flashed with a Euro S6 manual tune and finally modded to remove the rev limit for the missing vehicle speed sensor signal.

The temp gauge doesn't work and the fuel gauge light is permanently on, but the tacho and speedo both work fine.

Radiator fans don't work if you use the Audi ECU, but I switched from the stock water pump to an external electric Davies Craig pump and temperature controller which can drive the fans.

10-10-2018, 08:17 AM	#173
specboxCO Registered User Join Date: Sep 2014 Posts: 116	I used a 40v A8 AUX engine in mine. Biggest decision between the 40v and 32v engine is whether to go drive by wire or cable throttle. There is a slight mod to the accelerator pedal wiring in the Boxster needed if you run DBW. I used the stock Audi 7.1.1 ECU from the A8 adapted to the Boxster harness. ECU had to be hacked to remove the immobilizer and then flashed with a Euro S6 manual tune and finally modded to remove the rev limit for the missing vehicle speed sensor signal. The temp gauge doesn't work and the fuel gauge light is permanently on, but the tacho and speedo both work fine. Radiator fans don't work if you use the Audi ECU, but I switched from the stock water pump to an external electric Davies Craig pump and temperature controller which can drive the fans.