Isuzu truck tuning chip
DTE Systems tuning chip. I run it on a 2004 Isuzu FSR 700 with the 6HK1 motor (7.8 litre), 220hp. However I believe it will work on any of the 6HK1 series regardless of horsepower. The rotary dial is for fuel increase, set it where you want it. However as it is upstream of the factory ECU then the factory limiting parameters are in place. If you turn it to high the motor simply recognises too much fuel and cuts revs. I set mine a click increase each time until it hit the limits and then backed