Upgrades are usually done in stages. Each level will provide more performance than the one before it. However, they will also be more involved and expensive. The first upgrade we recommend is tuning the computer. This involves changing the fuel and ignition curves to optimize performance. A good tune can gain up to 40 hp on a stock engine. (Any significant upgrade will require re-tuning the computer.)
Upgrading a few bolt-ons at the same time makes sense. Here are some popular choices. (Note: In the links below, sort by year, make, and model to find the right part for your vehicle.) With stock pulleys, the blowers spin around 16,000 rpm at redline. Changing the pulley sizes can spin it faster and increase boost. The next step on the upgrade path is a pulley swap. The chart below will give you some idea of what to expect.
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Both engines have the same injectors and dual fuel pumps. However, they max out around 65 psi. The fuel pumps are controlled by a module that increases fuel pressure in relation to boost. There are aftermarket pumps and voltage controllers that will work with the factory ECM to increase capacity.
The cooler the fuel rails are, the cooler the fuel inside them will stay, which helps to improve injector performance and prevent power loss. With the AutoRama show rolling into Dallas, TX, auto photographers had their cameras ready and we were fortunate to get our hands on some of their work.
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