COBB Accessport | 22+ Honda Civic Si

Fits:

• 2022+ Honda Civic Si

CARB EO D-660-226 — legal for sale and use in all 50 states, including California, with no need to revert before a smog check. Install takes about 20 minutes via the included OBDII cable.

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The FE1 Si's 1.5L turbo has real power left on the table from the factory, and COBB's included Off The Shelf maps prove it: our team measured a stock baseline of 201 hp / 205 tq at the wheels, then got that up to 225 hp / 251 tq on 93 octane (218 hp / 245 tq on 91) through more boost, dialed-in closed-loop fueling, and timing optimized against observed charge air temps — all without touching hardware.

Beyond the tune itself, the Accessport gives you the fastest logging rate in the aftermarket Honda scene at up to 50Hz, with the ability to log 50 monitors simultaneously and live-view up to six of them as digital gauges on the high-resolution screen. If you want to go further than the OTS maps, COBB's Accesstuner Pro software supports custom calibration through any Authorized Honda Protuner.

Features

• Includes Stage0, Stage1 91-octane, and Stage1 93-octane OTS maps
• Stage1: 225 hp / 251 tq on 93 octane, 218 hp / 245 tq on 91 (vs. 201 hp / 205 tq stock)
• CARB EO D-660-226 — legal in all 50 states, no smog check workarounds needed
• Up to 50Hz logging, 50 simultaneous monitors, 6 live digital gauges
• Supports custom tuning via COBB Accesstuner Pro and Authorized Protuners
• Simple install/uninstall via OBDII, fully reversible to stock