About a year ago I exchanged my trusty and reliable Defender 90 for a 2005 Hilux which has a 2.5 engine. Had the Hilux stuck a couple of times and at these times wished I had never parted with the Defender but on the cold winter nights out lamping, a motor with a heater that actually produces warm air is a definite plus. I have never been impressed by the 2.5 engine, find it a bit lacking and so decided to experiment with a chip. I bought this from Racechip and recently had it fitted. Transformed a dull 2.5 engine into a far more responsive unit. Now my question. Apart from the insurance aspects of altering a vehicle does chipping an engine have any adverse effects. I do not drive the vehicle like a racing machine but could the extra power/torque put additional pressure on the crankshaft or any other part for that matter. So far all my mechanic friends say no but has anybody a different experience.