cetaneburner
Active member
The dealer for www.psi-motorsport.com gave me a drive in his Golf GLS TDI at GTI International 2002 in England. The car was phenominally fast, in 2nd gear it chirped its tyres (stick shift). TUV approved, and has a smoother fuel injection modification curve (not steppy like everything that gets thrown to us in the USA). Does anyone have experience with this modification, OTHER THAN Tuning Box, Upsolute, Wett, etc. The gent apparently had researched every other diesel tuning mod, and found that none were as efficient as the PSI box.