Tuned Civic Si Makes 360 Horsepower, Tears Up Back Roads

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If the Type R looks too over the top for you, then check out how this tuned Civic Si produces 360 horsepower to the wheels.

Aesthetically, Honda’s latest Civic Type R reminds us of the Iron Throne from the TV series Game of Thrones. It’s spiky, aggressive looking, and makes one hell of a statement. However, there’s definitely a market for people that like to be a little more discreet and comfortable but still like their Civic to perform. Unfortunately for some, the Civic Si is well short of the halfway mark between a regular Civic and the snarling track ready Type R. Despite having a limited-slip diff and only coming with a manual transmission, the Si is definitely a very pragmatic enthusiasts car. The upgraded 205 horsepower engine suits the package and becomes a joyous experience with Honda’s exceptional gearbox, but we don’t blame anyone for wanting more power.

Tuned Civic Si

The tuned Civic Si featured in this One Take video from the Smoking Tire YouTube channel is an experiment in getting a substantial power increase from the Civic’s 1.5-liter turbo engine, and the end result of 360 wheel horsepower is spectacular.


ALSO SEE: Honda-tech Reviews the Civic Si


It starts with an intercooler, cold air intake, and downpipe from PRL Motorsport. The turbo is from a Civic Type R that PRL retrofitted and sent to the owner of this car for testing. This Si is also running the full Type R clutch and flywheel, and the engine has a new redline of 7,000 RPM to make things even more interesting.

It appears they haven’t done anything internally with the engine though. If this can be made into a bolt on kit with a plug and play tune, then that’s a game changer. A bunch of sleeper Civic Si’s on the road would be a lot of fun. Assuming the engine can take it for a reasonable amount of time without beefing up internals, of course.

What’s surprising from the video is how usable the power is, and a lot of that is probably down to the helical-geared limited-slip differential that comes in the Si. It’s a good thing it’s not the “Carrying a Molotov cocktail while riding a unicycle,” experience that the One Take host, Zack Klapman, expected. However, it’s a great thing that a Civic Si can be made to go so damn fast.

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