While some can indeed work well, others can and will melt your engine. Plug-in chips will also need to be tuned on the dyno to get the best result but beware of cheap 'rail pressure adjuster’ types. The N70 engine has a tiny turbocharger and similarly small top-mount intercooler, and both are susceptible to performance-stifling heat soak if boost pressure exceeds 18psi. Boost settings and fuelling on the D4D is conservative from the factory, so expect this sort of gain without sacrificing reliability.īoost targets for the N70 should stay at around 18psi, which is only a handful of psi over stock boost pressure, and the reasons for this are two-fold. As we have shown with the attached dyno sheets, the stock 126kW and 343Nm can jump by 15-20kW and more than 100Nm of torque, and that's at the wheels. Its power and torque were good for the time but are now way off the pace, which makes tuning upgrades worthwhile. The N70 HiLux engine – the 3.0 D4D 1KD-FTV – is a solid performer.
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