Recently a representative of HKS Japan, Mr Suzuki, came to Top Racing Hong Kong “GT-R professional workshop” to make the announcement that the release of the HKS F-con V-Pro and F-con IS is set for mid to late June.

Top Racing was given a unit of F-con V-Pro to conduct tuning tests on the R35 GT-R and were impressed with the results. The V- Pro was installed on a R35 with the HKS GT600 kit installed, and during peak power there was a 20 horsepower gained. On our dyno, we were able to achieve 619.3 horsepower, and we can see a complete power up throughout the rev range.

The F-Con V-Pro is a full computer and completely replaces the standard ECU in the R35. It is plug and play, so installation is very straight forward. At the same time, this V-Pro comes with the HKS Valcon system, it allows the tuner to adjust the engine’s VCT system, which dramatically improves the low and mid range torque. With the ability to fine tune the fuel map, allows better fuel consumption and of course improves the power throughout the RPM. It’s again one big step in computer tuning for the R35.

We weren’t unable to conduct any test with the F-con IS. But technically speaking the F-Con IS is a sub-computer and runs off the stock one, but at the same time also allow the tuner to use the HKS Valcon system. The only differences is that you will need to run a OSC (Oxygen Signal Computer) to run the F-Con IS, this is due to the strong A/F close loop circuit the stock eco runs.. We believe that the power output between the two comp shouldn’t differ greatly, but the F-Con V-Pro will have more potential for tuning.

Link: Top Racing HK Website