Part 3 of the Miata 2.5L Swap - The Finished Product
March 13, 2024 From August 14, 2023 to February 28, 2024, my 2006 Mazda Miata went down due to a blown clutch and underwent an full rebuild from the ground-up including a new powertrain, suspension, and TONS of supporting modifications (for the full list of parts, see my prior post here ). Without further ado, here is my review of my cammed 2.5L Miata... Powertrain The first question everyone asks (and was the first one I asked too) is "what does a 2.5L Miata feel like?" I think the best way to think about the car is OEM+ (Original Equipment Manufacturer). The power band feels linear, but has more power in every area. Here are a couple of dyno graphs to help better visualize this: This is a stock 2014 Mazda Miata with a Versa-Tune Stage 1 Tune (same as what I was running prior to the engine swap. The power output was respectable at: Quick recap of the numbers above: 147 horsepower @ 7,000 RPM's 129 foot/pounds (ft/lbs) of torque @ 5,100 RPM's Now here is a 2.5L swap