Hondata have 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 degrees 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.
The graph above shows the results of installing the Heatshield gasket and bypassing the throttle body heating and idle control valve heating. If you examine a Type R intake manifold you will find that most sources of water heating are removed. Further temperature drops are possible when in addition the interior heating hose is blocked. What the graph shows, is that as you open the throttle, the intake temperature drops slowly as it cools the intake. When you descend a hill with the throttle closed or drive around town on a light throttle the temperature climbs quickly. It takes a good 15-20 seconds for the temperature to drop again when you open the throttle. So if you start your 1/4 mile drag with a hot intake manifold - you are only starting to develop maximum power near the end of the run when the intake has been cooled. The Heatshield gasket kit gives you 4-5% more power immediately by lowering the intake temperature.
Vehicle Fitment
Acura TSX
2004 Acura TSX All
2005 Acura TSX All
2006 Acura TSX All
2007 Acura TSX All
2008 Acura TSX All
Honda Accord
2003 Honda Accord Coupe
2004 Honda Accord Coupe
2005 Honda Accord Coupe
2006 Honda Accord Coupe
2007 Honda Accord Coupe
2003 Honda Accord Sedan
2004 Honda Accord Sedan
2005 Honda Accord Sedan
2006 Honda Accord Sedan
2007 Honda Accord Sedan
Honda Civic
2006 Honda Civic Si Coupe
2007 Honda Civic Si Coupe
2008 Honda Civic Si Coupe
2009 Honda Civic Si Coupe
2010 Honda Civic Si Coupe
2011 Honda Civic Si Coupe
2007 Honda Civic Si Sedan
2008 Honda Civic Si Sedan
2009 Honda Civic Si Sedan
2010 Honda Civic Si Sedan
2011 Honda Civic Si Sedan
Honda Element
2003 Honda Element All
2004 Honda Element All
2005 Honda Element All
2006 Honda Element All
2007 Honda Element All
2008 Honda Element All
2009 Honda Element All
2010 Honda Element All
2011 Honda Element All
