I'm the proud owner of a Porsche 904 kit car since 1995. For the last couple of years I had trouble getting my car to pass emission testing. I was running a Porsche 914 air cooled engine which had a hard time passing the TSO test. I then mind up to stop having trouble with inspection. I then called Allpro and bought a 2007WRX engine. I got a great deal from them!!!! After i installed the engine and got rid of all the DTC's, I had the car tested for emission,it failed!! WTF they told me the readiness test did not pass. I then bought a scanner and check the readiness test, it was showing 4 of the 6 test were not ready. With the help of Brandon at Allpro I was able to get the tests to pass. What a pain in the ASS it was!!!! So now I have my car passing all the ODB2 test. I was surprise at how much power that the engine has and how smooth it runs.