Tdci Tune Box

[paulie0735]

My son had one on his Astra Diesel manual, he was a rep and clocked up over 100,000 k's in 3 years. The car performed very well with the box installed but the best results were achieved at around the mid tune. They are adjustable but it is done with a bridge fitting, bit like a fuse, you take it out of one slot and fit it in the next to change the fuelling rate. Depending on the engine make and model will determine how much you gain, some models get great results while others are only moderate. Also these boxes do not 'reprogram' the ecu so any factory torque controls in lower gears are still present which is why you won't feel much difference in the lower gears, especially with the auto box in the Focus. The difference in the manual Astra was very noticeable and the engine made good power through to 5,000 rpm where as in stock form it ran out of puff by 3,800 – 4,000.