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We wanted to develop an intercooler upgrade that provides significant gains in terms of internal airflow volume and cooling without hindering turbocharger spool. After many weeks calculating a desired core size, optimal end tank fitment, all while avoiding CNC tooling constraints, we're finally able to order up a few custom cores for prototype sample testing.

Our kit will utilize a 3" OD cold side hard pipe with integrated methanol injection bung to replace the factory ~2.4" ID rubber hose to increase airflow and engine bay aesthetics. The kit will come standard with a factory diameter hot-side hose upgrade to maintain velocity and turbocharger spool. All supplied hoses are constructed of multi-ply high temperature silicone to increase durability and are "stepped" to promote smooth, laminar airflow. This kit also eliminates the factory charge pipe resonator, which increases audible turbocharger noise. Stay tuned for more updates!

Right off the bat, we can see that the 11th Gen is making considerably more peak horsepower. At peak horsepower, we are seeing a maximum difference of 19WHP and 20WTQ. This is due to Honda’s utilization of a twin scroll turbo (this term can be used loosely, we'll discuss this at a later date), dual port head, and the current generation having VTEC on the intake and exhaust side, which allows the head to flow much better at high rpm. This is also demonstrated by the horsepower and torque bump at peak boost, around 4200 RPM, whereas the 10th Gen torque curve begins to dramatically fall off as RPM increases.

We're ecstatic to see what the 11th Gen Civic platform is capable of. And yes, for those wondering all of our 11th Gen products such as the Resonator Delete Kit, Heritage Strut Bar, intercooler, charge pipe, downpipe, front pipe, Stage 1 Intake (silicone hose and panel filter) and flex fuel kit (once flex fuel tuning support is available for the Si) previously developed on our 2022 Civic EX 1.5T are also compatible with the Si Model. Stay tuned to see what else we come up with! 

Last week, we strapped our 11th gen to the dyno to test our new front pipe. With the car completely stock, we saw a maximum horsepower of 171WHP. After just a front pipe swap, we saw a maximum horsepower of 175WHP, and as much as a 7WHP midrange increase on completely stock ECU mapping.

Test results our new billet intercooler upgrade for the 11th Gen Honda Civic 1.5L Turbo showed tremendous real-world benefits. We saw up to 108 degrees (F) reduction in charge air temperatures, up to a 40% increase in cooling efficiency, reduced pressure drop and up to 9 horsepower gains in comparison to the stock.

11th Gen Civic Downpipe & Front Pipe Development