While doing your research we think it’s only fair to explain the differences of our exhaust systems, so you can make an informed decision on which exhuast is best for you!
For vehicles with a capacity of 2.0-3.0L, others will explain to you that a 2.5 inch or 2.75 inch system is the preferred option to upgrade your exhaust, not a 3 inch system. Technically they are correct because what they are trying to achieve is to compress the exhaust gas into a smaller pipe in combination with a restrictive Catalytic Converter to try and control the back pressure to the turbo(s).
Our muffler is designed to suit each vehicle. Inside our mufflers have dimples to aid in providing back pressure and produce efficient flowing exhaust gases. These dimples act as ‘Speed bumps’ for the exhaust gases and change the way the gas behaves inside the chamber to ensure there is no drone while ensuring engine response.
(Image: Ironman 4x4 BigBore muffler inserts)
In combination with a 200 Cell Diesel Specified Catalytic Converter and our specially designed muffler, we are able to control the back pressure from the turbo(s), therefore reducing the “turbo lag”. Our 3 inch system also lowers your EGT’s (exhaust gas temperatures) which is great for customers towing caravans or people who intend to fit a performance module allowing flexibility in tuning.
Fitting an exhaust in combination with fitting a snorkel to aid in cold air induction (please note: Snorkels are not just for creek crossings), in most cases leads to smoother driving and power increase but also better fuel economy.
Also after the fitment of the exhaust, snorkel and any other performance upgrades (intercoolers, turbo etc), it's strongly recommend to have your vehicle re-tuned.
*With vehicles such as the 2.5 MN Triton, NW Pajero & 3.2L Mazda BT50/ Ford Rangers, during the R&D phase, we have found these vehicles to be equipped with very high boost pressures from factory, thus we have prevented any chance of ‘boost spikes’ by containing the level in the form of a 2.5inch dump pipe.
Good luck with your research. We trust that you now have all of the information you need to make an informed decision on your purchase and of course, we hope you choose Ironman 4x4 Exhausts.