Back in 1987, HSV was formed with the goal of producing high-performance cars starting with the existing Holden mainstream vehicles as inspiration. The engines were significantly upgraded, along with the suspension and the brakes, while the appearance turned to sports aesthetics. The design itself was meant to enhance the car’s performance, therefore any further enhancements should follow suit.
The E38 Engine Computer Module
The E38 ECM was used with the VE V8 models and nowadays also with the VF V8 ones too and its tuning will make the biggest difference. A few of the parts cannot be changed from one year to another. The E38 ECM had its operating system changed many times already and tuning it may be troublesome or even impossible, since the setting cannot be transferred between sub-models. To tune engines equipped with the E38, you have to act on the vehicle’s original read file and start from there, making sure it’s all compatible before modifying anything.
You can enjoy a great kW gain if you work on the wheels of your HSV. A custom dyno tune can accomplish much in this regard. For high performance wheels, you may look into all the existing options with sellers. Some of the most interesting ones will be available on the Internet. Therefore, search for HSV wheels for sale from online, including used ones still in a very good condition.
You cannot simply fit an air intake and expect things to improve. This isn’t a safe procedure. Also, if the intake gets the car running leaner, then this isn’t good for its engine, nor for the overall performance. Watch out for the changes in timing and fueling; this happens usually when you modify the air intake.
Improving factory settings
The engine must be tuned in case you’re changing the air intake. You may do this in order to improve the performance, as well as fuel economy. The curve and timing values will follow. One important recommendation is to start using fuel that is at least at 95 octanes. This is going to decrease fuel consumption, as long as the engine tuning is precise. As the timing values get better, this will also optimise the full power.
With or without MAF sensors?
Regular HSVs are equipped with MAF sensors (to measure the air flow amount). Then, the computer matches the value with the most appropriate fuel quantity. When you let go of the MAF sensor, tuning becomes more difficult. All the other sensors are required to work properly. However, MAFs are not too accurate usually and may lead to compromises. Choosing to tune without these will enable working with various loads and rpm values.
Many of the aftermarket cams out there can have a significant impact on the engine’s power, as well as on the vehicle’s personality. A low rpm can be improved with ease and no risks. Don’t go for a too big increase though, because that will compromise on fuel economy. There are plenty of cams available to buy, so you can pick the best fitting one.
Apart from these, you may also work on the exhaust for example, to give your car a better sound. Ultimately, the modifications will depend on what you really want from your car and the available budget.