These stage 2 mods offer larger power gains than stage one but will usually require additional work or other parts if you want them to work reliably. Many stage 1 mods will raise the peak power, but you might sacrifice some low end power, so effectively you are moving the power band rather than just adding power. Just because they are popular it does not mean they are good mods or will add any significant power gains. Most of these easy to fit stage one mods are the first thing people will do on their project car. Some examples of stage 1 mods include, induction kits, panel air filters, sports exhausts, fuel pressure regulators, a simple engine remap or timing changes, blow off valves/diverters and the like. Typical stage 1 mods are generally a straightforward DIY fit and should work on a standard engine that is in good condition. These are at the bottom end of the tuning scene in terms of the overall benefits you will get. Whilst other mods can help to raise the power gains and realize the full potential of the mod they are not mandatory. This means that a true stage 1 modification part does not require any other engine modifications to get it to work. Stage 1 tuning modificationsĪ stage 1 modification can be added in isolation. Well there are some points that one should bear in mind that differentiate between a 'typical' mod in each stage. So how do we classify stage 1, 2 and 3 upgrades? So let's cut through these over generalisations of the terms and explain what most car modifiers and tuners would put in each tuning stage. I've even known some companies to offer a 'stage 4 or 5 tuning' upgrade! Then we get some working to power figures Typical stage 3 mods - Internal work is also needed.

Typical stage 2 mods - Two or more parts required.Typical stage 1 mods - Single bolt on parts or one time upgrade.STAGE 3 tuning - Pay loads of money and we'll build a track car!.STAGE 2 tuning - Pay us more money and get more power.The tuning industry use these terms but what do they mean and what can you expect from each of them? De-mystifying the Stage 1,2 and 3 tuning mods.

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