danmeister
New member
- Location
- Houston, TX
I wonder if the revised APR tune for U.S. cars now accounts for the differences between U.S. spec and Euro spec fueling (DI vs Port/DI combo) and other emissions related tuning differences. The software was originally developed using a European model GTI, likely to get a head start on developing the tune and being first to market. Maybe the Euro GTI fueling differences (Port Injection for low load/rpm operation, DI for higher engine performance) were at least partly responsible for the abrupt 1-2 gear DSG shifts reported by some original APR tuned GTI owners in the U.S.
It is unfortunate that VW (and other manufacturers) cannot develop one product that meets all of their markets' emission standards and regulations (TDI is a great example). This also means that aftermarket products, including ECU tunes, have to be developed and tailored to their individual markets. Props to APR for addressing any and all customer feedback and issuing tune revisions in a very timely manner. Now we just need a reliable turbo setup to provide a higher comfort level for getting Mk7 GTIs tuned.
It is unfortunate that VW (and other manufacturers) cannot develop one product that meets all of their markets' emission standards and regulations (TDI is a great example). This also means that aftermarket products, including ECU tunes, have to be developed and tailored to their individual markets. Props to APR for addressing any and all customer feedback and issuing tune revisions in a very timely manner. Now we just need a reliable turbo setup to provide a higher comfort level for getting Mk7 GTIs tuned.