4.0 litre Power Upgrades | Performance Cylinder Head Conversions | Unichip Tuning
4 L Nissan Navara, Toyota Hilux & Fortuner, Ford Ranger & Jeep Wrangler

Sadly most people seem to think that a cylinder head conversion means fitting a different and inferior head to the vehicle or modifying and butchering the original one beyond recognition, turning a perfectly running leisure vehicle into a lumpy idling, impossible to drive everyday racecar.

This is not the case with these master tuners, they have literally thousands upon thousands of full house, big valve, gas flowed conversions out on the roads today and they also offer their class leading 6 month / 20 000 km ‘No Worry Warranty’ on all work done for absolute peace of mind motoring.

Every vehicle’s standard power output differs, 4x4 vs 4x2, vehicle age and mileage, accessories like big wheels are just a few considrations that all contribute in painting a different picture on the dyna, but on average, a real gain of anywhere around 15 to 25 kW in power and a substantial increase in torque can be had when doing the complete upgrade, and what all this means in raw data is as follows:

Nissan’s 4.0 litre V6 Navara goes from a class leading 198 kW to around 225 kW, which is unheard of in a bakkie, but this is the country’s most blinged up and accessorised ride and this sort of power matches this bakkie’s personality perfectly.

The evergreen Toyota Hilux and Fortuner, also sporting a 4.0 litre V6 powerplant, is used extensively to haul the family and their toys all around the country and for this task, power goes from 175 kW to about 200 kW, more than enough to enjoy the tow out to dam as well as the day on the water.

The Ford Ranger was one of the oldest big boys on the road, and was the first to go big with 4.0 litre V6 power; this has changed with the new model. But it still only comes in at only 154 kW in standard trim, yet once worked over by SAC, close on 185 kW upgrades is now available to all the loyal true blue Ford fans out there.

The Isuzu is the smallest in capacity terms now days coming in with a 3.5 litre V6 that pushes out 157 kW, once it was class leading with its 3.2 offering when the others ran 3.0 litre V6s, but fear not, because SAC are now able to deliver your Isuzu back to you with a very impressive 190 kW of power at your disposal.

Finally there is the off-road terrier, the Jeep Wrangler, this must have urban and outdoor accessory only makes 130 kW from its 4.0 litres of displacement, hardly enough to seriously tackle the great outdoors. But again the results of this upgrade are nothing short of phenomenal, the SAC Wrangler sees 165 kW being churned out of this V6 and it is now ready to go anywhere.

These are the ultimate upgrades in terms of power, speed and reliability and if you want to have a vehicle that not only goes way better than it did when it left the showroom floor, but you also want to tow or bundu bash with absolute ease, this is the only way to go.

In the words of Fischer, founder and director of the franchise group's parent company, SAC Holdings, “A carefully researched and developed power enhancement package may sometimes even render a vehicle more reliable that the mass-produced version, especially in cases where the non-optimum design of a part has been carefully identified and subsequently upgraded or replaced during the enhancement process. And thanks to our well-established network of interwoven facilities, such as workshops countrywide and divisions for development, engineering and manufacturing, vehicle owners are increasingly realising the almost endless possibilities of individually-tailored power enhancement.”