1.   Armstrong giveth and now he taketh away, thanks to a couple of tuning tweaks involving compression ratio and ignition timing.

2.   Audi has also lowered the compression ratio and reduced the bore to make the engine quieter and the cylinder walls of the aluminum block more durable.

3.   A drop in compression ratio was tested by Top Fuel driver Larry Dixon after the Revell Nationals at the Texas Motorplex in Ennis last month.

4.   Bring on the compression ratios, you Spam guys.

5.   Compression ratio is a measurement of how much each piston compresses the mixture of gasoline and air.

6.   Even though the compression ratios are the same, the heat generated in the combustion chamber of the boosted engine is higher.

7.   Modern engines also burn fuel more efficiently, thanks to higher compression ratios and more precise metering of the fuel and air mixture.

8.   Talk about a compression ratio.

9.   The higher the compression ratio, or the more compressing the piston has to do, the more heat produced.

10.   The higher the compression ratio, the more heat is produced.