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Check the RAVE manual, but its located on the passenger side(NAS) in front of the washer tank mounted to the inner fender with two 8mm bolts. Should have a black plastic cover over it with two pushpins.
I would prefer the more conservative TDI-Tuning option for engine longevity. My 90X P400has plenty of power until I pull my trailer which has had up to 3,000# of cargo at times. At highway speeds 70 MPH with trailer connected it downshifts constantly when encountering a head wind or a slight incline. I wish it had a tow option in the choice of configurations. I have had aggressive tunes on Porsche’s to Ford Diesel’s and fuel economy always suffers but if I could easily switch the tune on when needed for towing then off for normal driving I would be happy.
I would prefer the more conservative TDI-Tuning option for engine longevity. My 90X P400has plenty of power until I pull my trailer which has had up to 3,000# of cargo at times. At highway speeds 70 MPH with trailer connected it downshifts constantly when encountering a head wind or a slight incline. I wish it had a tow option in the choice of configurations. I have had aggressive tunes on Porsche’s to Ford Diesel’s and fuel economy always suffers but if I could easily switch the tune on when needed for towing then off for normal driving I would be happy.
