What is a basic plan for increasing DOHC performance?
The DOHC does have some advantages that help squeeze a few extra horses out of it. Its main bonus is the additional 500 rpm redline over the SOHC. Because of differences in the two engines, the modification lists are somewhat different. Below is a 10-step program for getting more performance out of your dual overhead cam engine: • Remove the black weatherstripping from the back edge of the hood. This adds 1hp and is the most cost-effective mod, since it’s free. Approximately 10-15 degrees cooler underhood temperature means more power, too. One consideration: with the seal removed, an underhood leak can spray coolant steam over the windshield, causing visibility problems. • Plugs and wires. Replace the stock Champion plugs with exactly the same thing (a buck apiece), and do it every 10-20,000 miles. Fresh cheap plugs do much more for the Neon than expensive ones. • Cold air intake. Installing a CAI ($100-300) replaces the stock airbox and the restrictive snorkel. Horsepower increase var
The DOHC does have some advantages that help squeeze a few extra horses out of it. Its main bonus is the additional 500 rpm redline over the SOHC. Because of differences in the two engines, the modification lists are somewhat different. Below is a 10-step program for getting more performance out of your dual overhead cam engine: • Remove the black weatherstripping from the back edge of the hood. This adds 1hp and is the most cost-effective mod, since it’s free. Approximately 10-15 degrees cooler underhood temperature means more power, too. One consideration: with the seal removed, an underhood leak can spray coolant steam over the windshield, causing visibility problems. • Plugs and wires. Replace the stock Champion plugs with exactly the same thing (a buck apiece), and do it every 10-20,000 miles. Fresh cheap plugs do much more for the Neon than expensive ones. • Cold air intake. Installing a CAI ($100-300) replaces the stock airbox and the restrictive snorkel. Horsepower increase var
