[versaspeed.com]

D1 Spec and Shadow are the 1st version throttle controller which might cause CEL from time to time.
ETC is the 2nd version which has been reprogrammed to better calibrate w/ ECU and to be compatible toward European Makes and models. PPL from other major forums such as Subaru LGT & Mazda6 are using ETC as well

Agree, so far the ETC's that I have sold the Customers have been crazy over and some have had them over a month. :cheers2:
And the instructions are in English! :smile5: