Phenolic Spacers

I first ran across this idea while reading an Autospeed article. The car that did this is a normally aspirated  MX-3. The temperatures dropped somewhat dramatically and his performance enhancement was figured to be a few horsepower. Not bad for a little mod. I'm hoping with the extra temperatures seen in a force inducted car, the results will be even more promising. Not only will there be a performance increase, but the chance of detonation should decrease.

 Notes: 

• By Ambient Air Temperature, I mean outside temperature.

• For the engine bay temperatures, I had the probe attached to my BOV tube which is between the passenger side of the intake manifold and firewall.

• The intake manifold temperatures were taking by twist tying the temperature probe to the manifold right next to the fuel rail. 

I had a chart showing what the intake runners themselves do at idle. The temperature was taken just above the injectors using a laser temperature probe pointed on the intake manifold every 30 seconds for a total of 15 minutes. Unfortunately this info has since been lost.