2012-2015 Honda Civic Si Hondata Intake Manifold Gasket

Hondata has developed a special high temperature insulating gasket which replaces the stock intake gasket. This and bypassing several heat sources significantly reduces the transfer of heat from the head to the intake and incoming air giving you up to 5% more power.

Turbocharged cars often use an aluminum intercooler to cool the air compressed by the turbo. The intake manifold is also made of aluminum but because it is heated by the head from combustion and coolant, works in reverse to an intercooler by heating the intake air by as much as 50° C.

Fact: For every 3.3 °C (5° F) rise in intake temperature, air density drops 1%. The hotter the air, the less fuel the computer injects to compensate for reduced oxygen. HondaLogger datalogging software has enabled us to measure intake air temperature under varied driving conditions.

Around town, testing has shown an average drop of around 10 °C which is good for around 3 percent power increase. Remember though that 3 percent power increase is difficult to feel. You'd feel a greater change in performance getting rid of that passenger. In certain conditions a 30° C drop has been measured.

The Honda manifold is heated in up to 5 places. From the head, the interior heating takeoff hose, the cold idle valve, the idle control valve and the throttle body heater. The Heatshield gasket kit contains an insulating gasket, and installation instructions. A race version only version with the thermostat bypass blocked is also available.

Vehicle Fitment

Acura ILX

2013 Acura ILX 2.4L

2014 Acura ILX 2.4L

2015 Acura ILX 2.4L

Acura TSX

2009 Acura TSX All

2010 Acura TSX All

2011 Acura TSX All

2012 Acura TSX All

2013 Acura TSX All

Honda Civic

2012 Honda Civic Si Coupe

2013 Honda Civic Si Coupe

2014 Honda Civic Si Coupe

2015 Honda Civic Si Coupe

2012 Honda Civic Si Sedan

2013 Honda Civic Si Sedan

2014 Honda Civic Si Sedan

2015 Honda Civic Si Sedant